I'm loving DR high beams on my DJ5 (failrly similar bass). I've recently started using fat beams and think they sound even a little bit better, especially on the low-B, but I have yet to try them on the DJ5 ... just waiting for the beams to go dead (it may be a while!).
If you let us know more what kind of music you play and what you've tried in the past we can be of more assistance.