I've been looking for an upgrade from my HD280 Pros and thought the Bose TriPorts would at least sound decent. They sound great on that lil listening station at most electronics stores, but once I got them home and listened to all my own tracks, they aren't very good at all. They're boomy, distort easily, and suck when it comes to high end. I've been spoiled by my Sennheisers
And my set-up isn't anything special either. A Creative Labs Audigy SE sound card ($30 at Wal-Mart), and my Sennheisers.
The Bose don't suck completely. If you've never heard music with Grado, AKG, BeyerDynamic, Sennheiser, AudioTechnica, Stax, or Shure phones/IEMs, and like the "better sales through marketing" approach of Bose, and have the money to spend, then you'll love the Bose Triports.
Bottom line, they're good, but not $140 good. More like $50 good.