Great guide by Boomana (I hope you don't mind my sharing):
http://www.head-fi.org/a/buying-guide-headphones-by-price-range
Very helpful 
Thanks everyone!
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Great guide by Boomana (I hope you don't mind my sharing):
http://www.head-fi.org/a/buying-guide-headphones-by-price-range
Very helpful 
Thanks everyone!
If you don't mind the open design and sound leakage, I'd definitely go with a Grado. I have similar music tastes to you, and the SR80i has been absolutely perfect for me so far. I don't have much experience with the higher end Grados, but I can definitely rec the SR80i.
edit: Sorry just saw your later post that you don't want sound leakage... whoops sorry! 
I have 5 sets of headphones. Considering your interests, the ones from my little collection which would suit you best are the Pioneer HDJ-1000. These were my 1st good headphones, and none of the others have been able to dethrone them from the #1 spot in terms of sound quality and versatility. They are also the best in my group when it comes to isolation, power/volume, clarity, and hooking straight to an iPod.
Any opinions on the V-Moda Corssfade LP? I was suggested the M-80 or V-80 earlier, but the Corssfade is 75$ cheaper (hence, in my price range), so I was wondering if they'd be any good for what I'm looking for.
The Crossfade LPs aren't very well received around these parts. They're said to have a very boomy bass which intrudes on the mids.
The V/M80 are much better options. And if you want a bass-heavy portable, I think the LP2's have been well-received (?) There haven't been very many reviews, so I'm not 100% sure about that...
Agree. Crossfades are closed cans, which is nice, but the cups are a couple sizes larger than the M/V-80's, and they don't pass the military testing either.