Perhaps I should suggest Ultrasone, for they make excellent pairs of closed-can headphones... Just thought I'd throw that in there.
I'm sure if you look hard enough you can find one in your price range. Maybe the HFI-450 or the HFI-700 B-stock.
Just throwin' it out there,
-Tech
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Own: Ultrasone HFI-700, Grado SR-60, Bose Triport Over-ear (Muddy), Bose Triport In-ear (Muffled and both need treble EQ [Fixes everything]), V-moda Bass Freq
Want: HFI-780's, Senn HD-650, Ultimate Ears Triple.fi 10's