My opinion: better than Halo, Brink vs. Black Ops will be based on camping.

Halo CE, good. All the subsequent ones are way too slow paced for me, so I was happy with the addition of the sprint ability, however this innovation is a little late for halo.

Black Ops will be better than MW2, even though they aren't adding a Beta (this game isn't, MW2 didn't).

The determining factor is camping, if less people camp in Black Ops, I'll like Black Ops more than Brink. Vice-versa. If I buy the PC version of Brink, there is a 100% chance it will be better than Black Ops (just because I'll be in my own light-only world anyway, but that seems schizoid, even/esp. for me), although I will always hate PC controls in relevance to the controller. Personally, I'd like to buy them both on Xbox, not just Black Ops.

SMART is the reason I'm getting this game, but afaik, no one can make a better map the than Treyarch/Infinity Ward. I hope Brink can prove me wrong on my last statement. I only played a little W:ET... my favorite thing was the knife.