I own an early Walther P99 with the A.S trigger its my all around handgun.I like the "Factory"trigger action (no gunsmithing required),smooth & short pull(striker fired SA/DA w/decocker)
The gun is very well made,light weight,great finish,moderately priced,lifetime warrenty, the safety features are great, it has Ambi controls & mag.release, an accessory rail, and accurate adjustable sights.
The ergonomics were designed by Cesare Morini, designer of the competition rifles for the olympic team.
It seems "Taylor Made" to my hand,but has 3 different backstraps to accomadate all users.
Its one of the most comfortable handguns (in it's class).
I also like the styling.
IMO Walther has cutting edge quazi-futuristic styling (its one of thoose love/ hate things,I also think the PPS looks cool).
You bought a real good underrated gun.
Most people don't want to pay $300 more for a P99 over an M&P.
A Walther P99 is basically a "High End" M&P (but much better in every way.)
http://i582.photobucket.com/albums/ss266/glostamon/p-99-1.jpg