Hmm, fine. In that case, get something from Denon with circumaural (full size) cushions. Their atrocious frequency curve will make "boom boom" action games more fun.
If you want actual sound, stick to Sennheiser (stay with circumaural cushions for comfort).
That sounds hilarious considering Sennheiser is widely know as having a "veil" and being a very dark sounding headphone. They're certainly not flat either. Most Sennheiser's have a large rise in the mid-bass area. Denon's are also hardly "boom boom", they're slightly dark sounding as well and really for the most part I'd call them the closed back version of most Sennheiser phones without the spike in the highs, though slightly better for rock music because of impact. My two favorite headphones are the Denon AH-D1000/1001 for its pure value and Sennheiser's HD580 when it could be bought used for $100 (last year, now it likely can't be had that cheap). AKG's more audiophile-centric series (601, 701/702) are known for being much more flat, as well as Beyerdynamic's DT880. If you really want to talk about how wild each phone can get just compare Beyerdynamic's DT770, DT880, and DT990. Those go from extreme bass, very flat response, to highly colored. All from the same company.http://graphs.headphone.com/graphCompar ... =0&graphID
The DT770 is "boom boom" the Sennheiser not so much and honestly the Denon only favors the lows slightly more (because it extends better more than humps).
None of this really matters at all. It is about what sound you like. Which is why Headroom (headphone.com) is so great. They typically cost slightly more but if you're unsure about what you might like you can try a few pairs and settle on which sound you like. Some people love Grados, some hate. Some love Sennheisers, others hate. It is about your ears.