I'm sure you've done your research else where on the internet. If not, they have forums dedicated specifically to AR's.
I've got a colt le6920 but they don't make those anymore.
If you're looking for a complete rifle, there are lots of options ranging from cheaper to custom made.
AeroPrecision, FN, Sig, and LMT are good and affordable, maybe LMT a little less so. I've put my hands on several Aero and FN's and can't complain about them.
Daniel Defense, Radian, VLTOR, Knights Armament, LWRC are your gucci guns.
If you're looking to build, you can always check out Brownells, they have everything related to building AR's that you could ever possibly want.
Hope you find your gun!