If you're looking for a basshead headphone that sounds great right out of the box without EQ, I can recommend:
M-Audio Q40 - pros: price, SQ - detailed mids and highs with emphasised bass
.......................cons: build quality, feel fragile
ULTRASONE Signature DJ - pros: Amazing controlled, textured and beautiful bass - possibly the best or one of the best "audiophile" basshead headphones money can buy, understated luxury, amazing robust build, SQ that bass doesn't bleed into mids or highs, excellent detail and soundstage, well accessorised
...........................................cons: high price, S-Logic feature reduces SPL up to 40%
But do check the top 10 and recommended headphones listings above - bass/paper test video links show each cans SPL performance as a visual aid
Both the Q40 and Signature DJ headphones are listed in the recommended section, but as always is the golden rule, always attempt to audition a new headphone yourself in person (if possible)