I pre-ordered MOH back in July to play the closed beta.. It was a total disaster, no one could map certain keys and it was basically just unplayable. Then beginning of October they released a public beta (only for testing the servers) and they cleaned it up a lot.. BUT, I ended up canceling my preorder after playing..
#1 - No prone.
#2 - No strafe left/right while sprinting (something COD and most other FPS's allow)
#3 - Very little recoil on any of the weapons, didn't feel right or realistic at all.
#4 - Couldn't map my 3rd mouse button.
All in all suckage compared to COD. I've played every COD title as well (with exception to COD3 obviously), so take it from me, don't buy MOH if you like COD.
But yeah, DEFINITELY getting Black Ops on release night.. Treyarch restored my faith in them when they decided to ensure dedicated servers would be around this time.