I thought I would give my first impressions to the thread seeing as I've found lots of useful and well written opinions on the website myself! (thank you guys and girls) So... I bought a pair of JVC FRD80. I was looking also at the Sony XB90, Sony XBA-H1 and these little beauties. But in the end, the microphone on these JVCs, and the great price of £26 had me choosing these.
I'll keep it short, but basically the fit of these is good - they're smaller than I thought they would be, and also lighter than I was expecting. The silicon earbuds / tips are nice, but I'm yet to find out if replacement tips will fit, as they appear to be a tiny bit larger than other Sony/Nokia/Pioneer eartips that I have used (bigger at the end that attaches to the earphone - the sizing for your ear is normal).
Really good quality earphones overall. Better cable than I have had on other JVC earphones. I think they look the business too!
Most importantly, the sound: It's really rich sound with excellent bass delivery (not muddy or soft) - nice smooth mids and detailed high notes. I always use Adele's "Set fire to the rain" as a test track as it has a huge range of sounds. The song sounded the best I have heard in a long while, picking up on all the detail....and every nuance of Adele's fab vocals. The bass guitar is a bit recessed in that song, but that is nit picking on an otherwise excellent sound. I've tried Jazz, Pop, Progressive House, Swing Hop...and Adele - they all sound brilliant. They are a little "warm" sounding... less "analytical" than my Sennheiser PX360...but they stlil pick up all the little details and are an easy listen.
I have on order a pair of much more expensive Audiofly AF78 earphones - I'm now seriously wondering if I should have bought them!