I've had a Springfield Armory M1A since the mid 80s. (sorry, don't know what the M1A1 is (other than the Tommygun
))
Other than the semi auto receiver and lack of full auto parts, it is a rack grade M14. And that's the way I want it.
It shoots as well, or better than I do. I don't shoot matches, and have no interest in a "match grade" one, especially at the insane prices asked for them.
I've had ARs, FALs, HKs, and the M1A. I still have the M1A, and its not going anywhere, except to a child or grandchild when the time comes.
Its the last real RIFLE we issued as a general infantry weapon, Uncle Sam trained me on one, it has a special place for me.
You will probably spend less money for the same accuracy if you go with a modern AR variant. Maybe better accuracy, I don't know. What I do know is the ergonomics of the stock M1A fit me well, and I shoot it well. And that's good enough for me.