Headphones for my taste in music?

I've done many research, looked at many posts on this forum, but couldn't find an answer for my specific taste. I really wouldn't mind going to an audiophile shop and auditioning for some headphones, but... from what i know there are none near me that are truley dedicated to headphones. I have found a few online that is near where i live (long island new york) but when i check there website out, they have everything audiophile related, but headphones....

So with that being sad, my budget is at most $300 would prefer to spend less, i am likely to get the asus xonar dx soundcard (since this is strictly for desktop music listening) and soon after that get the fiio e9 desktop amp. I had my eyes on the Sennheiser hd 598's,  and was ready to buy them, until i did a little more research and found that most of the buyers are softer music listeners. I really don't listen to much soft music. I enjoy listening to mostly rock, but 2 times out of 10 ill listen to some bassy music like hip hop and dubstep. I listen to many types of rock. I enjoy listening to many different types of bands like Linkin park, Saliva, Breaking Benjamin, Disturbed, Drowning pool, Guns n' Roses, Metallica, Ozzy osbourne, black sabbath, Trapt, Chevelle, Puddle of mud, 3 doors down, Red, Korn, Limp Bizkit, Styles n beyond, Celldweller, Blue Stahli, Nirvana, Alice n chains, soundgarden,  Crossfade, and so much more like these bands that i cannot think of off the top of my head. As for hip hop/ dubstep i really only listen to 1 or 2 main artists. Eminem is great, and some skrillex songs. Every once in a while i might find a good beat of a rap song that i might enjoy listening to.

I realize that i am sacraficing bass if i go for a rock orientated headphone, but i am willing to make that sacrafice.

A note, i have heard Grados are great for rock, but after hearing so many reviews that they are very uncomfortable even for long time users, i have quickly steered away from them simply because i do not feel like adjusting my headphones after every song or even in the middle of every song. Not to mention the reviews where i heard they leave peoples ears to ache, i don't want that. Don't think im looking for a top of the line comfortable headphone though, i just want a headphone that will leave me to leave them alone and not adjust while im listening to music.

I forgot to mention, i will take an open backed headphone because i will be alone in my room listening to music.

Another edit: I enjoy listening to a ton of the songs that WJRR plays (http://www.iheart.com/live/593/?autoplay=true) Thats a good indication of what kind of headphones i need.

Ok, so the thing with the denon AHD2000 (or at least i am pretty sure thats what you meant) seem great, but from looking online, i could only find that from one retalier and that is amazon, for $350 which is outside of my budget. That is why i probably didn't look into them after reading your post from my last thread.

As for the audioengine d1, is it really a better option than combining the fiio e9 and xonar dx?

Oh man, i was hoping for more suggestions while i was at work =(.

I am not a fan of buying used products, unless its a certain item. Those headphones sound like a good pair of cans for me, but its price is a little too high. They seem like they are about to become discontinued due to the lack of retailers right now.

Ok, so I looked up the Pioneer SE-A1000 and i found that the msrp is $150. I even saw on amazon that they were $50.00. I am in no way looking for cheaper headphones, i want something that will produce the best quality sound for the music i listen to for $300 or under.