I've only owned one, which I still have. It is an HK USP .45. I carried an M-9 Beretta for about 3 months when I was in the USAF too, although I didn't own it. No plans on buying anything for me anytime soon, maybe something for my wife though.
I'm not a big fan of handguns. I don't have anything against them, it's just that I like my rifle better than my handgun. The only reason I carry my pistol is because the world isn't ready for me to OC my AK. Maybe someday.