From the answers so far, you've probably sensed a preference for two-stage triggers for precision shooting. That is not unusual for AR-platform shooters, but I think it's largely due to the way most of us use our ARs. Few of them are truly "precision" rifles. That's not that they're not accurate, but if you're talking about serious one-hole shooting, you're usually looking at a dedicated bolt gun.
Our ARs, on the other hand, tend to get a little more flexible use. Off-hand shooting, field shooting, varmint shooting, speed games...the AR is usually not dedicated to accuracy alone.
Because of that, most of us don't want a trigger pull measured in ounces. If you build an AR with a 1-pound trigger, you're probably going to be very careful how and where you use it. You probably won't want to run it in a 3-gun competition. With a 2-stage trigger, however, you can make that maybe a 4 pound trigger, with 3 pounds in the first stage and 1 in the second. Now you have a "safer gun" to run around with, but you still get the benefit of a light, crisp, final break.
If I'm building a rifle specifically for the bench, then a perfect 1-stage trigger is wonderful. But for a more flexible rifle, it's hard to beat a 2-stage.
Incidentally, I just picked up an M&P-10 with a Geissele-installed SSA-E trigger (2.3lbs first stage, 1.2lbs second)--a very nice trigger.
It also happens to have a PRS stock with AccuShot Monopod. I have PRSs on a couple other ARs and they're a great stock...but they're not lightweight. And since "lightweight" is half the reason I picked up this M&P, the PRS is about to be replaced with a CTR with extended rubber pad. I also really like a simple A1 stock on my rifles, but in this case I want the flexible of a collapsible stock so I'm going with the CTR (I hate stocks that rattle).
What you choose, ultimately, should be based on what you want to do with the rifle.