Also, IWB leather holsters are most comfortable.
Kydex shells on leather backing with or without comfort pads are most comfortable.
100% Kydex shells (pancake or taco style) are stiff, rigid and most uncomfortable in any carry position.
Like the rest of us, you have to try many different ones to find the one that works for you....You might want to purchase one of those large storage containers at Wal-Mart to hold all the holsters you don't like and don't use.....