I think that for absolute reliability, I would rather buy an M-14-type rifle than an AR-10. I just like the rifle better for one thing.It is a proven performer, as is the AR.
I would like some opinions from someone that has handled both types. I have shot lots of .223 through ARs, but I have shot the M-14 rifles very little. If I buy a rifle, it will be the .308-not the .223.