I've traded several over the years and can't say I really regret getting rid of any of them. My collection is finally coming to the point where I don't have anything that I can see trading or selling. A couple times I've regretted taking the trade value but it was usually for a gun I really wanted.
It was the first handgun I ever bought - right after my 21st birthday.
I sold it thinking that I wanted something "better." I've since owned auto pistols from Ruger, Glock, and a few of the striker-fired Smiths (Sigmas and M&Ps). I've handled and shot 1911s, XDs, Sig Sauers, Tauri, etc.
I've yet to find any auto pistol that offered anything "more" or "better" than that 6904... :-(