I've got a dpms lr 308 classic, and it shoots well. Pic's are in a Sling thread in this forum. She's a heavy war pig, about 13 lbs with the scope and a mag or so.
You can buy replacement parts for it rather easily, and I haven't had any issues whatsoever. I've put about 500 rounds of gutter cheap ammo through it as well as some decent hunting ammo once I got a scope on her.
I would love to have something like a POF, LARUE, LWRC REPR, Fullton ARmory Titan, and so on, but DPMS is what I've got.
I'm on a moratorium from further purchases until we've bought a house, however, and I need an H&K USP 9 Compact and a new hunting rifle before anything else.