A lot of great feedback here!
My 10 step program when I am trying to get snappy, fat snare sounds:
1.properly tune the snare (I like the bottom head to be tuned a half step lower, with a slightly tighter "basket")
2.pull the mic (beyer m160, 57, i5) back slightly (3-4")
3.aim it to where the strikes are (thin, coated heads)
4.use an API 512
5.medium attack on compressor (1176)
6.fast release if I want more snare side sound
7.slow release if I want less snare side sound
8.add a little top end (5k or so)
9.boost around 180-250hz (slight dip around 500hz in some cases)
10. use a nice plate reverb on the OH mics or simply record in a great room