Desantis Cozy Partner for a 5" 1911 and a Sig 228. Crossbreed Supertuck for a Keltec PF9. I had a Crossbreed for the 1911s but never used it much. My daughter took it and LOVES it. The only IWB she's been able to use for a full size pistol. She's all of about 110 lbs.
Key advantage of the Desantis is that they're very easy to slip on and off in the car. The big Crossbreed for the 1911 wears well but I need to be standing up somewhere private to install it.