I currently have a pre-ban M1A, Israeli War Hammer Light barrel FAL, Galil Ace, and Larue Tactical Ultimate Upper on a Larue Lower. I've owned over the years about anything you can think of - preban FALs, HK91s, various AR10s, G3's, CETME's, etc.
Only one of the guns I own or have owned really fit the 2MOA (actually much better) criteria and that is the Larue Ultimate. It's less than half the cost of an OBR but fully as capable. At 100 yards the bullets touch. In 1 day of a long range shooting class I was hitting steel targets out to 800 yards with it with ease.
All of them are fun to shoot - some more than others, but that Larue is never going anywhere. It's the most accurate and capable rifle I have ever owned. The only downside to it, is that it is heavy as hell...
Earl