I'd say so. I've only played three hours of Brink so far, but I've already had just as much, if not more, fun than playing Reach since it came out. That's just my opinion, I find Reach to be infuriatingly stupid.
Example: In Invasion on Scrapyard (I think, the one where the Elites have to capture the core) why are the Spartan vehicles guarded by a shield so we can't get to them, but they can just steal ours and dominate the map with every vehicle on it?