Fulton uses cast Springfield Armory Inc receivers, and Smith Ent is currently using LRB forged receivers (but they are tooling uo to reintroduce their own forged receivers, again. Nice!). And the current SAI Garands are cast receivers, while the USGI are all forged. At the prices quoted for these 2 rifles in the orig post, I'd buy both if they are as described.Both M1A's and M1 Garrands are good rifles. So it will come down which caliber you want. I personally like both calibers (.308 Win. & .30-06) and the decision would be hard for me. New Springfield M1A's go for about $1800.00 or more. The new Springfield M1 Garrands go around the same or a bit more. Fulton Armory and Smith Enterprise M1A's are even more due to the fact that I believe they use forged recievers instead of SAI's (Springfield Armory Incorporated) investment cast recievers and are more of a "Custom build" rifle. Also Mccann Industries makes a M1 Garrand in .458 Winchester and .338 Winchester versions. I believe these are intended for hunting guide rifles. Both M1A and M1 Garrand have the same "garrand type action" and are very robust. If you could swing it, and they both shoot and are in GOOD condition I'd snag both of them for those prices.
Re; M14 clones, most are quite good. The Chinese guns get very high marks from Ron Smith (may need to change out the bolt, though), all the Springfield Armory M1A's have a lifetime guarantee no matter if orig owner or not, the Armscorp rifles are excellent, the Fed Ord rifles came in 2 configurations (USGI parts, or Chinese parts) and are fine either way. I'd have an Enterprise checked out by an M14 Armorer before buying. Some were awesome, and some way out of spec. And LRB is as good it gets.
One thing to keep in mind if you go with the Garand is that .30-06 surplus is drying up, and Garands in 06 are not intended for commercial ammo, which means you will be reloading M2 spec yourself, or converting to .308. When the CMP is out of Greek HXP 06 (already out of LC!) it will be awhile before cheap 06 surfaces again, if ever.
If you can post some pics and some specs of each, it will help figure out which is the best deal. Both are robust, accurate, durable rifles that will serve you well.