I picked up the Centurion from the post office tonight. I'm happy with what I see, and it's as advertised as far as improvements are concerned. Definitely comes with the d-spring and improved trigger., slightly shorter reset. I really like the texturing on the grips - also the contour is slim, but also swells out a bit in the palms for a nice fit.
I like the included second grip its just as slim in contour, but also acts as a back strap that contours the frame like the old main spring housing. I think I"ll prefer switching it over to the second set of included grips, so it wont be straight vertex style. This pistol fits like a glove, and I can't wait to get it out on the range.
Thanks!