I bought a 26 and later added a 23 for a little variety and added capacity. Both conceal beautifully in Nick Mathews #1 and Gary Brommeland's Max Con V.
There's no doubting that .40 has a little harder kick so the slightly larger form factor is helpful. 13+1 .40 180 HST is pretty comforting too.
G17, G26, G30SF, Gen4 G23
"They that can give up essential liberty to obtain a little temporary safety deserve neither safety nor liberty." Ben Franklin