I know I know.....thread resurrection.
I've had the d-JAYS for a number of months now, and there's just very little bass. Maybe I should be looking at getting a pair of Turbines or JVC-Victor FX500s to replace my Sony EX-85s (which produce great bass but very low detail in the highs) instead. I wasn't expecting these to be brilliant at producing really low-end bass, but I was still expecting these to be a bit better than they are.
The d-JAYS are extremely comfortable. They isolate sound very well if you're walking around the city streets (not really recommended for safety reasons, but it's something I do often), sitting in a café near people who are chattering away. Also, the way they sit in your ear means you can sleep with them on. You don't feel them. It's not a huge deal for me unless I fly, and I do fly internationally quite often. I can wear them for hours without feeling discomfort.
Also, my source is generally a Nokia 5800 XM (Xpress Music), which comes with a remote control for play, pause, skip forward and backwards, etc. The length of the d-JAYS cables are absolutely perfect for me, and I'm 5'10" (177 cm).
Anyway, I can't say I'm disappointed with these unless I listen to hip hop or dance. They're great for indie rock, and some dance (dance-rock) tracks, but I like to have some bass with those tracks. These don't really provide much punch. The bass is definitely present, but the d-JAYS aren't recommended by me for those who are going to listen predominantly to dance or hip-hop.