If you are after sub-bass, rather get a Denon D7200 with the D5200 pads (more sub-bass but more linear, peak around 25-30 Hz, more oomph), or the Fostex TH900 (more low bass rumble and hard hitting, the kind you likely want, peak around 30-40 Hz). The TH900 with the carbon foam pads (see TH900 mods thread) is absolutely brutal in the bass, without sounding boomy. There are no headphones I know ATM that beat it on the bass impact. Planar bass is more "correct"/musical, but IMHO not as brutal/physical like dynamic cans can be. The best e-stats and planars can be even harder hitting and perceived as much better bass with nothing missing in depth, but not in the perceived sub-bass impact. Of course, limitations of headphones apply, but the TH900 gets close to the impact of big main speakers plus dual subwoofers (except the "feeling in the bones and lungs", i.e. without the house rattling around you; I remember that for their bigger subs, REL used to require statements from owners for exemption from structural damages possibly caused in the house - you cannot beat that with headphones).