I had a P2000sk before my M&P 9c, and I sold it so I could get the M&P. Never looked back.
I liked the design of the P2000sk, however, it didn't shoot well for me. It was either me, or the gun. But either way, we weren't compatible, and that's never good.
Everyone has different ideas of what is good and what is bad. Everyone shoots differently.
I just found the M&P accomodated me better. Its more comfortable to shoot AND to carry. And that is important to me.
I don't hate HKs, I just think the P2000sk wasn't the right gun for me. Good luck in your decision.
I say get the M&P, and not just because we're on an M&P message board, but because I personally do think it is the superior firearm.
But what do I know? I've only owned both of them.