CMP is the best way
gebooth, I have heard of neither IAI nor Norinco Garands. Yes, IAI M1 carbines and Chinese M14 clones, but not Garands. I have not seen the latest Springfield Garands; they have been advertising for a few years without showing product. I have seen some really bad CAI rifles. On one, the only thing that looked good was the new receiver; the rest of the rifle was garbage (pitting on the metal, what appeared to be patched termite holes on the wood).
Starsfan, there is no "qualification" required for a CMP Garand (other than US citizenship), either before or after purchase. If you do not fit one of the exemptions, then you are required to show evidence of shooting activity, which has some limits, mostly which are satisfied by shooting in single highpower match, of 50 rounds or more. All you have to do is shoot, there is no "qualification", no minimum score. Your CMP rifle will not be a re-import, although the re-patriated rifles from Denmark did have a trip to Europe, but one of these must be special ordered, and they are cheaper. Oh, an uncut oprod is a good thing to a collector, and likely safe for anyone, as long as you are not launching rifle grenades.
I would stick to either a CMP rifle, or one with a return policy, so I could check the headspace before firing it. I own both a CMP Garand, and a re-import, which is more accurate since it has a 1965 barrel on it, and was not used much since then. Even the CMP rifle shoots about 4" groups at 100 yards with 1960's surplus ammo; not bad for a WWII relic.
Have fun, Lee