I had checked out beachaudio.com...
...and I saw mostly overpriced underperformance headphones! They have only a couple of good headphones, but everything else in their wide selection of headphones sucks. Their Sennheiser selection has the 4#7 series as their only decent headphones - the HD 500's and HD 570's both suck for their $$$ to me. And the 590's? Well, they aren't good enough for their price, either. beachaudio.com does NOT carry the HD 600's at all. As for Sennheiser's HD 2##/EH 22## series, only the HD 280Pro is any good (among beachaudio's wide selection) - and all of the other HD 2##/EH 22## series 'phones suck.
Sony? Their CD2000 and CD3000 are okay, but the rest of the Sony line is mediocre at best.
That site also carries only two Koss headphones that are any good - the KSC-50 and the Porta Pro.
And that's practically the selection of headphones that I saw that are noteworthy to me - none of the other brands of headphones that beachaudio.com carries are particularly renowned for them. Moreover, they sell WAY too many different types of audio/video products, making their site difficult to navigate - and reducing the quality of their selection at the same time.
And keep in mind that I am mostly a music listener; I don't use headphones at all on my computer (most consumer soundcards suck for music).