Sands is the only place that I know for sure has $5 tables, but those aren't all the time, and they offer the 6:5 SD games too. I hate that place.
BJ Insider says the Borgata has a $5 table open 24/7, and now they might have as many as 2 open 24/7. Of course, you might have to wait 2 hours for a spot.