Yunus, if you decide on the AR10 check out LaRue Tactical. Not $2,000, but that is a good start. I have thought about getting one, but hate the idea of adding a new platform. One of my friends has an LRB M25 as well as a POF Piston .308 and another AR10 type. He does not shoot one better than either of the others.
And my M25 shoots fairly well, however.
Here is the first 5 shot group fired after dropping it into a JAE Gen2 stock.
Ammo was Black Hills Match, 168gr and the group was fired fairly fast (in about 20 seconds?). This type of accuracy won't win you any technical competitions, but it will hit any reasonable target out to beyond the effective range of the .308Win round.
I used this rifle and ammo combo in a two day precision long range rifle class a couple of years ago and it held its own against some very nice bolt guns, including a GAP 700 in .308. The 168 showed it's limitations after 900, but it was sufficient at 1,000. All targets were 24"x24" steel plates, out to 1200.
Get which ever one you like best, and know they will both do the job.