They say the best way to choose an iem is to audition it.Since that doesnt seem to work out I thought I'll ask somebody who owns one and comapare it to the others he has or has heard..I willl really have to stretch to get the S4 since its about 3700 bucks. I need to now is it actually twice as better than the NE 6 or, Hippo Vb or RE 2, which are the other options I have and seem to be in budget. I hate boomy bass, but LOVE deep penetrating clear bass, the kinds you get from a neat headphone like PX 200/PXC 150..Also the acoustics and the mids need to have sweet definition.Recently bought the E5 with the L1 , just to enhance the bose experience since my source is the Ipod. Please help !