Pretty good advice so far. Any open headphones will not give you the bass you are looking for. Here is a good review for them.
And if you are just not sure, then yea, go try some out. I use AD700s which are open and fit my needs. But occasionally I get the craving for something heavier (music), so I went and tried out some DT770s and was impressed. They had the detail of the AD700s, but also had great bass response. A bit more $$ than the Sony's though.
Edit: the Senns are bass neutral and you will not get much more out of them no matter what you do, but they do sound great. The Sonys are very bass heavy to the point it over powers the mids and highs. You may however compensate some of this with an eq adjustment. They sound good, but not as clear as the Senns. IMO, if you want a good mix, the DT770 Pro80 might be your ticket. They are a little more expensive, but worth it. With them you will be able to clearly hear the snap of the sticks on the drum heads, and still feel the bass.Edited by ericld - 1/15/11 at 7:48am