The Trop $4-8 & $7.50 (pink chip) are both good , Caesar's (new room) $3-6 is good but has lots of rocks, House of Blues (Showboat) $2-4 & $3-6 is filled with a lot of inexperienced players (calling raises pre-flop with anything), Borgata $3-6 can be really good on the weekends and late hours (super-crowded though), plenty of college-aged guys who watch ESPN.
The Taj is good for sheer # of games & short wait times, but the place is kinda lame in the daytime (filled with retirees/rocks). Lots of railbirds/watchers, and so-called "experts" analyzing every hand. I find it kind of annoying after a while.

I've also heard the $3-6 games at Harrah's are super-easy too. I haven't played at Bally's in years, or the Sands.
If I had to pick one game out of these, it would probably be the Trop $4-8.