I definitely wouldn't mind a M1a to go along with my guns. But 308 is pricey, and so are m1a's, lol. I like to shoot a ton of rounds when I go shooting, that's why .223, and 5.45x39 are sweet. If I was gonna hunt, I think i'd get a Savage 10BAS in 308. But for targets and plinking, they're just to much for me.
As far as high capacity vs low, nothing is more fun than dumping a 30 round mag in a few seconds.