The British Army really likes the LMT -- they ordered 440 of them after testing it against the HK 417, to use as a semi-auto precision marksman rifle. It is a direct impingement design, which is a drawback in my book, but there are a lot of AR owners who would beg to differ (until it is time to clean our guns, at least).
Some SWAT LEOs have complained about the large Magpul SRS stock, but supposedly the LMT SOPMOD stock is the stock design to order....
$2500 MSRP -- you're bumping into FN SCAR 17S territory, and I'd rather wait and buy the SCAR (the first run will be black, confirmed by FNH-USA) because it's a gas piston design and has a folding stock, not to mention I think it is the best 7.62 weapon available in the market today.
I have seen and handled the LWRC REPR - you definitely want to comparison shop against it. Really nice weapon.
Other direct impingement AR options would be the superb Larue Tactical OBR (in the same price range as the LMT) and yes, the venerable Armalite AR-10 (very accurate semi-auto rifle).
I have to agree with lenardlex - the M1As are very hard to beat (ask the soldiers in Iraq and Afghanistan how good they are in combat, to this day) and you could get a real nice M1A for that kind of money, and get 25 or 30 round mags to boot.... I own three variants of the M1A, and all of them are utterly reliable, accurate, and these will beat or give an AR weapon fits even in long-range competition in the hands of a good operator.
Me, I am waiting for what I call "SCARZilla" - the new FN SCAR 17S. 8)