Honestly, I probably wouldn't pay for them, but they are awesome earbuds. I don't like the fact that they don't work very well when I'm on the treadmill but other than that they fit well. I don't find them uncomfortable. The wireless transmission technology is great, you can get pretty far away from the transmitter before it starts to break up (20 feet usually, but it varies)
AFAIK there is no noise cancelling in these headphones (if there is it doesn't work), but the audio quality is awesome. The battery life has pretty much stayed the same I guess, I haven't noticed any drop off. It does take a while to charge, but I just leave them overnight, no problem.
I just can't justify the cost, as I don't use them a whole lot. My fiance uses them more than I do.