I haven't read the whole thread, but I have to praise the Audeo line. I used to use Shure SE420s with my iPod, but after they broke for the second time, I decided to try a different brand. I'd never heard of Audeo, but I was impressed by their sound filter design. I have the PFE122 and I use the gray filters with them. I swear they sound better than my SE420s which by the way are dual drivers. The Audeos are a single driver and sound better IMO.
Anyone else use Audeos? I don't know how well known they are.