I only own one handgun at the moment. My Browning Hi-power was stolen some years ago. Anyway, I like the "extension of your arm" comment as far as a pistol feeling comfortable. That Hi-power was incredibly comfortable, and controllable. 9mm doesn't kick too bad anyway. It took me no time at all to be comfortable with the Hi-power, both in grip & funtion. 2 hands, one hand lateral shots, or straight forward....very controllable weapon in any shooting situation.
My only handgun currently is a Ruger GP100 .357 magnum with 6" barrel. Again, very comfortable for me. 2 hands, one hand, it doesn't matter. Easily controllable for me, and I pack it as CCW now & then in my shoulder rig, and have never had a problem concealing it with a jacket. If I feel I absolutely must, I can pack it in summer as well in a waist bag. Bit large for that application, but it works. Anyway, for that reason, I am looking at a more practical CCW pistol in .45 ACP semi auto soon.
Point being, if it does not feel comfortable (as an extension of my arm), I am not going to buy it. An extreme example of a weapon I'd never buy is the Desert Eagle in 44 magnum. That thing is ridiculously large to hang onto, even for me at 220 lbs. with fairly large hands. I handled one in a pawn shop just out of curiosity. I recently was handling a Taurus 24/7 OSS .45 ACP, and that thing felt incredible in my hand...almost as good as the Hi-power, even with the double-stacked magazines. I can get a preferred vendor discount on any Taurus through my work, so I am seriously considering the new model 845, which is a variant of the OSS with exposed hammer and shorter barrel.
I bet you didn't see that coming, eh? 
