I love NCAA football, but I only buy a 'new' EA Sports title every 3-4 years since they really don't change much - and when I buy them I wait until the newest one is out to get the previous years for sub $10.
Interesting, I've tried a few F2P's but never enjoyed them. It usually seems that microstores break games for people willing to spend money.
I absolutely loved Fallout 3 so I don't really care if it's a 'more of the same' as a lot of people seem to think it will be.