I recently bought the Bersa in nickel. I like it a lot. I've put about 75 rounds through it without a hitch so far. I picked the Bersa over the Firestorm versions for two reasons:
1) I can get the nickel Bersa in California (the Firestorm is only approved in Blue). This is only an issue for Californians.
2) I wanted the adjustable rear sight. This turned out to be worthwhile - after putting a couple of magazines through it, it was apparent that it was grouping somewhat to the left for me. A few turns of the screw, and I had it grouping right where I aimed it. I think with the Firestorm, I'd have either lived with the gun shooting a bit to the left, or had to bang on it with a brass rod and mallet. Neither option is particularly appealing. I find the Bersa's sights fine - about perfect for this type of pistol.
I would have slightly preferred the rounded trigger guard of the Firestorm (for easier holster options), and the finger groove grips, but I find the Bersa comfortable to hold, and I think (but am not sure) that I could install Firestorm grips if this were a big issue for me. All-in-all, I'm very happy with the purchase and would get the same model again.
Doug