My M1A is approaching 1000 rounds and it's been rock solid reliable and accurate enough with many flavors of ammo, from steel case ball to Hornady SST hunting ammo. I say stay the course, get your M1A, and if it doesn't do it for you then they hold their resale very well and you should be able to sell it for little to no loss.
FWIW I love my scout and couldn't be happier with it.
I have heard of the extractors going bad but haven't experienced it myself, not a single FTE out of my rifle. If it happens then SA has top notch customer service. The plastic hand guard on my scout cracked and they had me a new one Im the mail and delivered in about 3 days.
Sgt. of Marines, 5th Award Expert Rifle, 237/250
1st Award Expert Pistol, 382/400
D Co, 4th CEB, Engineers UP!! OEF 21JUN-20SEP2011