I'm going to give the Sony PFR-V1 another shot - I was thinking about what I want from headphones, and in the end I've decided to try a pair of PFR-V1, and also a nice pair of closed cans (still not made my mind up on which ones).
The PFR-V1 seem to be going for really low prices at the moment - I've not received mine yet (should be here Friday!), but a new boxed pair from the USA to the UK for £145 all in seemed very good! ($179 + $39.99 S&H on eBay) - when they first came out, people were paying $500 or so for them :O
The only reason I sold mine, was because they were causing me ear pain during long sessions, however I'm now wondering if that was my own fault (incorrect fitment / not using foamies). I'm going to persevere with this set, and if needs be, mod them (I've seen, for example, a Japanese site where someone threaded a foam from what I imagine was a pair of IEMs over the bass tube).
Anyone still got theirs set? There must be some PFR-V1 love out there somewhere!