I own the Glock 23 Gen 4 in .40 cal. The Gen 4 in addition to back strap-changeable feature to help dial in the grip better, also has dual captivated recoil spring which helps a bit with the slightly more snappy recoil of the high pressure .40 round. Glocks are among the most, if not the most, widely issued and carried by LEO's today.
Nothing wrong with a Glock. Really nothing I can see terribly wrong with any of them.
I also own the XD in a .40 and shoot the crap out of it. It has tritium Tru-Glo's which I like a lot both day and night and they are reasonably priced. Also featured are a REALLY bright tac light and count 'em, two lasers. One green and one red. Naturally green works both in daylight and limited viz. Red primarily for limited viz. Yeah, it's a real Christmas tree effect around my place....

This set up, intended primarily for interior home defensive situations, sits on my night stand and is one of my main home defense guns. There's also a Glock with a similar set up.
Why two lasers? Redundancy and my near sight vision has gotten bad enough now to where I really need glasses to get a good sight picture.
If I wake up suddenly... forget it.... it takes time for my bleary eyes to focus as well as they are going to and that's not good enough to get a sharp sight picture without the glasses.
Some people hate anything on their gun and want it clean. I shoot with everything on it and train that way.
Of course if all else fails, (you can't count on anything with batteries) I'm still an on-target instinctive shooter at home interior engagement ranges.
I don't want to be fumbling for glasses and trying to load mags (that's why my guns stay loaded) if a couple of meth-heads just smashed their way in for a home invasion. Ergo the lasers are my "Disability Rapid Sighting Devices". I am going to look into Lasik to see if it can be done for my particular issue, but I don't know if they can do it for near distance sight correction.
The good part is, not only have the Castle Doctrine laws recently been greatly strengthened in my state, I also live in a redneck county where the juries just about hand out medals to people who successfully defend themselves via their 2nd Amendment rights
Next to the XD is a legally converted (back to original AK configuration) Saiga 12 with a 12 round stick mag, collapsible stock, Bubbed up nicely and loaded with a mix of 00, and #4. Spiky wicked breaching brake and rails makes it "look" extra scary. Drum mags are in the safe but I don't anticipate needing one for this application. I own three of those S-12's in my collection. It goes without saying that spare mags are ready and available for all weapons in my particular set up. In the end, strip it all the "scary looking stuff" off and it's still at heart just a very reliable semi-automatic shotgun that racks a round into the chamber just as loud as a pump gun. I don't bother with racking, it stays fully loaded.
I also have a Kahr in PM9 9mm compact with Crimson Trace laser and Tritium sights. It is very lightweight, and has a nice balance. You will likely want the mag-extension if you considered one.
For general shot placement sufficiantly in the KZ, not talking competition shooting, I generally subscribe more to marksmanship fundamentals applied across a broad spectrum of brands and configurations, rather than major differences in accuracy with various handguns... (I know, some will beg to differ)...Ford & Chevy argument....
But with slow, aimed fire, I have hit pretty consistently in the kill zone at 40 yards with the aforementioned little 'ol Kahr. Considering the barrel is just under 3 inches, it might speak to some accuracy differences of the design of this particular weapon which gives me pause to give at least some weighting to design differences and any real accuracy gains over the skills of the individual shooter.
Walthers, Rugers etc. etc. All good. In my book, in the end it generally comes down to the Operator of the particular weapon - all things being equal and assuming you don't have a TOTAL piece of junk handgun that you are counting on and it's mechanically sound.
Bob, I am assuming that you have children in the house or other reasons to not want a loaded weapon on standby. Not even a mag in the weapon as you describe.
For sure, to each their own and to each their own comfort level
and your personal reasons are just as valid as others who may may differ.
I'm the opposite, no children in the house, no crazy people...

... and my guns all stay loaded with a round in the chamber. Of course I perform the proper periodic spring and mag maintenance and replace them as required.
That's obviously not suitable for every household situation but plenty of my friends and associates do or have done likewise.
I even known some people, husband and wife as a matter of fact, hubby was SF and his wife was a lawyer - that carry on their hip or shoulder around their house at all times. They for some dumb reason bought a nice big old house in a bad neighborhood. But nobody ever screwed with them. Hi Dave, if you're reading this.
I took my CCW permit course taught by a State Trooper buddy of mine. His whole thing is this: "If you pass the background check, fingerprints and all, and it usually takes about 3 months, then you are "Part Of The Club".
He is totally pro-gun and considers those who legally carry CCW to be part of an "elite" group of citizens and professionals. I think that's a bit of a stretch having seen some of these yokels that shouldn't even own a gun - but I won't discourage his take on it.
Therefore, when he pulls someone over, he already knows if you have a CCW just by running the plates, and that's why he tells you to have your license and CCW permit in your hand with both hands on the wheel when pulled over. Oh, and turn the dome light on at night he says. "Criminals do not do that" in his experience as a Trooper.
What's different about this particular LEO is that he will give a mild "lecture" to those who are NOT, repeat
NOT carrying if they have a CCW! Along the lines of "What good is it having the CCW if you are not going to carry religiously?" I guess since he has to lug around a gun all the time he wants to share the misery.

How cool of a cop is that?
His take on it is, someday he might need you, me or another citizen to help him out, back him up or save HIS life! But anyway, I'm getting off topic here with the bit on CCW.
Regular Guy Said:
"Sir,
I +1 everyone on the Glock, I love them. But that H&K is the Lexus of handguns IMHO. I own the same one, just in the .45 version. The smoothest firing .45 I have ever owned, so I would imagine the same or better for a 9 MM. Pretty pricey though,"
Sounds nice. I am very interested in the H&K and have read some pretty good things about it including the smoothness of firing especially in the .45. I need to try one out and if I like it then it will be my next handgun and in a .45