I have made a review thread comparing the Sony MDR-1R with the Sennhesier Momentum, MDR-Z1000, Logitech UE 6000, Audio Technica ATH-M50 and AIAIAI TMA-1...
Any word on the Sony XBA-NC85D? These catch my attention, because I was always afraid to use iem's because I was worried about damaging my hearing from high spl. Are these any good?
I think the point of IEMs ( and their ability to block ambient noise ) is so you don't have to turn up the music loud, for good sound. High SPL really shouldn't be an issue.