Warrior-Mentor
That's the right one. If you read the data sheet it's not really chlorine "bleach" that the MIOX makes. It's better. Have used it all over and it has replaced my katadyne. Just gotta take an extra battery just in case. Very simple, small easy to use.
www.botac.com had them for $100 recently, not sure if they still do but that was the cheapest I've seen.