Probably not my favorite overall, but I always enjoy Wakistan purely for the bridge fight. Reminds me of a map in America's Army, if anyone remembers that game, that was solely focused on crossing a bridge.
I really enjoy the constant bridge push. It plays similarly to Operation Metro in Battlefield, and I've always enjoyed that because it feels like raw chaos. Like the crazy action-packed warzone I want it to be.
Frugis, SandySunset, and TensaTown are all top tier for me, I love urban combat where front lines are ill defined and there's a squad holed up in every building down the whole block.
I dislike any maps that force players in a very narrow frontline. I dont remember map names but the one with the high bridges and that one with a shipwreck in the middle.