Hill People Gear Snubby Kit Bag in Coyote Tan...
I'm a pretty lean guy and 6' tall but I couldn't imagine rocking one of the larger bags. They are 3" wider and 1.5" taller. The snubby is perfect for me and is plenty large for a compact pistol. My Kel-Tec has tons of room in there and a G19 even fits with a TLR-3 on it.
I have the stabilizer strap on it right now (that bottom one) which is elastic, so that will help keep it from moving around. I may also pull the Grimlocks off since I don't have a use for them right now.