Love it!!! I've had mine a year now, and except for some jams on flat-point hand-loads that were just a touch too long, I have not had a singe fail-to-fire, nor fail-to-feed with factory ammo, since I bought it. I'm at about 2K rounds now. No mag-drops, or rust. Easy to hold, easy to shoot. If you buy one, put 5-800 rounds through the gun before complaining about the gritty trigger, it's just how it is. It smooths out, or you can send out for a trigger job. Also, the best customer service in the business, AND IIRC, Smith has another freebie deal on. Many have said it feels a lot different from other 40 cals, and that it doesn't have as much snap to it.
Let me put it this way, I don't think I've run into a single person who has hated it, and I've heard at least one gun-store's range guy tell a renter that most people who rent their M&P buy one.