Sounds like you actually have a nice Model 59, but with any used semi-automatic pistol, always replace the recoil spring. As far as I know, the recoil spring is the same for the model 39,59, X39, X59, 390X, and 590X. You can spend more money on a Wolff 14 pound recoil spring, but the cheaper S&W springs work just fine. I like to replace the recoil spring in my pistol that have barrel lengths of 4 inches or more every 5000 rounds.

Also, you may have a weak magazine spring. Again, the S&W springs are fine, the Wolff magazine springs, which I do like, are a little stiffer and can sometimes solve a feeding issue.

And as for the single action trigger reset, yes, the S&W's posses a very short and very positive reset. The only trigger reset that might be better is on the 1911, but that's a whole different style of pistol.