Most of those points apply to the PX4 as well (speaking as someone who's owned two - still have one).
- The PX4 is
not tenifer finished or any of its knockoffs, insofar as I know, but is epoxy finished. I don't know what is under the epoxy.
+ Short trigger reset in SA mode, DA mode resets into SA mode anyway unless you're some sort of DAO commie, in which case I want nothing to do with you!
- Push button mag release, but reversible without any additional parts.
+ Smaller than anything I've ever seen given capacity (17 rounds, isn't the P99 15?) and smaller than "full sized" service pistols though classed as one anyway.
+ Metal magazines (that hold 17, neener!) though this applies to everything barring Glock, insofar as I know.
+ Comfortable grip (to me, this is subjective) with 3 different widths of backstrap in the box.
+ DA/SA without manual safety is available in the type G, where the "safety" only acts as a decocker. The type F is a safe/decock combo (though cannot be saftied with the hammer cocked, as it will decock).
+ Accurate as all-get-out. Indeed, the most accurate non-rimfire pistol I've ever fired. Plus the rotating barrel mechanism is cool and allows a low bore axis, reducing felt recoil.
But the P99 is a danged fine pistol and I almost bought one if it weren't for the fact that the DA/SA is bloody impossible to find and S&W has discontinued their variant; Only the QA model seems to be available anymore.