DPMS is good stuff ... in fact, I can't think of anybody putting out bad AR stuff these days. It's such a proven and tested platform, pretty much everything out there works well for private use. Of course if you're going to be dragging it through the mud and putting thousands of rounds a month through it, you'd want to narrow your choices.
You'd love a PTR Matt, I also have a DSA FAL and would say they're every bit as good and worth considering also. I think right now the PTR is the better buy because you can get mags so cheap. CDNN has PTR's on sale right now btw, $965 with the tactical forearm.
If you're thinking about getting an AR before they're banned, but don't necessarily want to spend the cash for one right now, just buy a stripped lower. That's the only serialed part, and with just it you'd be able to build a complete gun even during a ban period. They're around $100 btw, I have about 15 stripped lowers in the basement