The SR-25 is the only one that's been around long enough to have a real operational history, and its reviews have been mixed, depending on what you read and where you read it. I've only talked to a couple of guys that used them for reals
. Was told that when they work, they work great, but tend to be ammo sensitive and such (which, really, is no surprise, MOA accuracy comes at a price, especially in an autoloader). That's all the info I can give you.
I'm going to warn you, though. I've been on internet gun boards since I first joined The Firing Line back in 2000. That's a solid decade of gun board participation on my part. Never once has a "which gun is better?" thread every produced anything resembling a solid conclusion. You'll get a few strong opinions here or there, and may actually learn something about the merits and weaknesses of the guns involved, but don't expect anything decisive.
Besides, hanging out in our Tactical Tree House is no fun if we don't have anything to
pointlessly bicker about