[cdwmedic03]

I had the same problem when I got a new tasking as a medic for my TF's DART team. I was using a TT Trauma Pack and having to pack for possibly 3 days in the field. I looked at my kit, bulk, blah blah blah. So long story short, I bought the Conterra Longbow. It's been a godsend. Almost totally customizable medical compartment (it's got a velcro panel that you can set up however you want, what medic doesn't go gaga for that). Plus the medic compartment is limited in size to the point that it forces you to cut it down to only what you really, really need.
The Reaper also is spot on with crossloading your gear with the rest of the team, I would rather have each man carry an IV (which for me makes a total of 8-10 liters on the ground for me to use), rather than carry four or five and be so heavy you don't move as fast and easy.

The longbow has a compartment for your personal gear. Large enough for the bare essentials, but not a lot of room for much else. Again this pack forces you to pack only what you need. Which in turn keeps the load light(er). The internal frame makes it super comfortable as well. Decent price too.

just my .02