The problem is though, I already have large Denons - However - I am sick of the funny gigles and stares when I wear them in public - " Hey Pilot, you've still got your headphones on ....He He He " Nope - the 580s are just way to large - It's gotta be somewhat compact - drivers 40 mm or smaller....Thats my problem - no one seems to have a good idea of what can give me good, powerfull CLEAR base.....Lots of " OK " bass recomendations, or ample - but muddy....It's just frustrating - because if I'm willing to spend $ 250 or so, you would think it wouldn't be that hard to find something audibley worthy of that kind of money in a compact size...People have reccomended the Ultrasone 780, T50, ES9WA, Beyer 5P,Klipche ONE, SN 25 - but no one can think of a PORTABLE set that will at least give me the Bass deffenition of my M50s for $ 100 less. I've also given strong consideration to the Phiaton M400 - has the bass - but I've been warned that its not really an audiophile quality on the rest of the sound spectrum.....I'm about to just give up, say f'it and just learn to accept the giggles at Starbucks.....So frustrating - it would be different if I was only willing to spend $ 100 or so - then you can learn to live with compromises. Any suggestions other than the above would be appreciated