i LOVED the Sennheiser 650's......
.....until i got myself a pair of Klipsch Image ONE's...
got two pair for my wife and i.....
the deep rumbling bass is what made me get the Klipsch instead of the Sennheiser....
they're not noise cancelling, but they fit ON the ear...
i test fit the Senn's and the Klipsch for @ 45 seconds with two seperate coworkers and the Klipsch felt waaaaay better, so i ordered them.
when i got them and actually started listening to music at work, my ear started hurting really bad after about 15 minutes - after a week i got used to it.
i like having them at work because the longest i typically go for without interruption is about 40 minutes...
the pair i got my wife is actually sitting at my home computer, so i put them on quite regularly if the wife is in the living room watching one of her Killer Wives shows lol....
for the price, they're hard to beat....
http://www.klipsch.com/image-one-on-ear-headset/details
http://reviews.cnet.com/headsets/kli...-34335826.html
http://www.pcmag.com/article2/0,2817,2396436,00.asp