Got a V-10, wish I had the Kimber, wouldn't consider another Colt for love nor money.
That number after the V is the number of holes cut in the top of the barrel. I don't recommend those holes on a defensive pistol, as all sorts of interesting things (blast and pieces of hot metal spring to mind) come out and hit you in the face, particularly if you're shooting from the hip. If TSHTF, I'll shoot the V-10 and cry, but I wouldn't have to worry about that if I'd been smart enough to get the Kimber. I also find the Kimber easier to take apart, FWIW, but that ain't universal.
In short, taco is right.
Steve