I'm a big guy and carry my G23 in a Galco M5X http://www.usgalco.com/HolsterPG3.as...=3225&GunID=49
Since it is a OWB paddle, if it does hit you wrong when sitting, it is easy to shift to a more comfortable spot. It conceals very well for me. Not sure if you want IWB or OWB, I may have missed that.
Oh, and these can be bought for $20 local retail.