After reviewing your choices. (Big Congrats! BTW) I went with the M1A.

Here's my son at the range with a fellow "Retired Military" members M1A. I prefer the natural wood, but it is, as I'm sure your aware, that bad ass of a rifle.
After getting my CMP M1 Garand, The evolution of taking a Garand action, and putting a 20rd. mag on it, is downright awesome.
Not knocking your other options, a good AK is always a solid choice, and cheaper to shoot.
BUT,.....I'll have an M1A some day, they are that good. Sigs and 1911's will always be popular, but the M1A is like looking at a supermodel of rifles.
FWIW, Congrats again, just don't take up Canasta and shuffleboard....
