I'd also look at the Geissele SSA-E, or even the RRA 2 stage match trigger. Both great triggers for the money. Buy them when they are on sale though. $79.00 for the RRA and $100.00 more for the Geissele... Be aware though, the RRA may need a little polishing to make it better.. The Geissele will be damn near perfect right out of the box..
I just finished updating one of my AR's and part of that was a Geissele SSA-E. Very happy with it. Bought 2 on sale.