I am IN LOVE with my "Standard Model" 6" with the flat non-target-style, non-thumb-rest stocks. The new thumb-rest stocks are an attempt to "justify" the Buckmark as a target pistol, but they make it too bulky, and make it too hard to hit the magazine release. I would even buy a new one with the thumb-rests and then separately buy the hard flat regular stocks.
The Camper looks swell, but I haven't shot one yet. The 4" barrel standard style that Dad bought is fun, but you really don't save that much on room with the full-sized handles and the same sized frame and the same sights. You really just lose sight radius. But, it does shoot every bit as well as the 6" model; it's just a little harder to attain with the shorter sight radius.
You cannot go wrong with a Buckmark! I will shoot mine until it falls apart, and then I'll get two more! (200+ rds just this Monday afternoon, and I returned from the range elated! What fun!)
Matt.