My two cents, for what it's worth.

I absolutely did not like the original M&P. I owned two of them. While they were both perfectly reliable I found the accuracy to be lackluster at best.

I now own a 2.0 and after only six hundred trouble free rounds I must say I really like it. In fact, I like it enough that I have made it my main IDPA gun. The grip texture is awesome and the accuracy is night and day different from my previous two M&P's.