Not really, and don't get the 965. It's just clocked slightly higher than the 955 which is something like $15 less.
And the GTS 250 is pretty much just a 9800. For the price, get a Radeon HD 5770. I heard that it's performance rivals that have a GTX 260 and the 270.
You shouldn't need 'super' cooling so the Smilodon would probably fit your needs better. They both have decent cooling the 300 just a bit better.