If you are going to target shoot get the super match (lots of fun!).
If you are going to plink get the National match (mine is not as accurate as my super but it will do for plinking)
If you are going to hunt or use it in the field get the loaded m1a. (hate to scratch up any of the match grade guns)
If you want to snipe, get the m21. (Only one I do not have, but it was sure fun to work with. I will get one this year sometimes)
Hope this helps.