I've got a Bersa Thunder .40, and just bought a SW40GVE (S&W's Sigma).
At first, I was leery of the .40, but now I'm going to stick with it. There are a lot of platforms for the .40; compact, sub-compact and full-size. The ballistics can be as formidable as the .45., but the round will fit in guns the size of most 9mms.
The .40, IMO, is the most versatile pistol caliber.
Playboypenguin, what is that pistol?