I'm going to be that guy and say that nearly every handgun will be more accurate than me (with one exception). It's what you shoot best that counts. That being said, I'll play along and say that my most accurate pistol is a Glock. However, what I think the most accurate pistol that I have ever shot was a HK USP Tactical. I loved it, but my buddy wouldn't sell it at the time and he actually traded it off
For those interested about the one exception, it was a Rohm RG23 .22lr Revolver. I placed a B size target at 5' and it didn't hit paper
My wife has one that her father gave to her when she attended LSU. I could not get on paper either from 12 feet away. Horrible little clunker. IIRC, this is the pistol that Hinckley used to wound President Reagan and James Brady with...