I bought a COP 357 once because I really liked one that a friend showed me years earlier. I still have it and like it. (I lost touch with him and he never actually knew I purchased one - I wasn't trying to one-up the guy)
I don't believe that I've ever had a friend buy a gun similar to any of the ones I own. But, I do tend to gravitate toward the odd and unusual "off-beat" firearms - not usually the kind of thing you can run out to your LGS and buy.