Oh....of the one's I've got now?
My Smith & Wesson Model 69, 44 Special/44 magnum...I reload, so ammo's not a problem. Second choice would be my Model 28, 357.
For a semi-auto, I really don't care. Probably the Ruger LC9s I just got. About the only thing I use a semi for would be concealed carry. The Ruger is just fine for that. I reload 9mm also and got a bucket full of brass.
Second choice would be my Glock 17, but that's my only other choice.