I think it should be mentioned that the Beretta M9 has pretty much set all the current bullseye score records. When properly accurized, they are pretty incredibly accurate. A fitted KKM stainless match barrel by itself when properly installed and they will just plain shoot; even without muzzle support. In fact, I think all the records were set with guns that still didn't have muzzle support (hopefully Bob can chime in and verify or correct me). Then there are the conversions with muzzle support like the one WAL does.
I find the Beretta's a bit refreshing to work on; they're pretty simple in comparison to building 1911's. Many of the accessories for the 92 series are really quite easy to install and most guys with a modicum of handiness around the shop can pull it off with ease. The last 92 I had, I hadn't even finished customizing when someone offered me a good sum for it and I couldn't turn it down. I plan on getting another one, but my next one will be a model 96 Centurion .40, for which I will pick up a 9mm KKM, cut it down, thread it, and fit to the gun. I'd probably shoot 9mm 99% of the time, but I'd have .40 and I'd probably want to pick up a .357 Sig barrel as well for rainy days.
I really like Novak's replacement rear sight, it leaves a decent amount of light on either side of the front sight; just the way I like it. I'll swap out the plastic parts, install a light trigger spring, 14lb mainspring. A couple of Mec Gar 18 rounders that I have squirreled away for when I eventually do find my 96 Centurion.
I think I would have a lot of fun with that pistol.