I use the Icon which I love now that I found a good ear but that fits well and is comfortable to wear all day long... This is one of the bigest complains when it comes to the Jawbone is the fit in ear... Even though they give you 6 different option in the package to try, I have found most people have had a hard time finding a viable replacement. I myself have found that the clear Gells I got with a Previous Plantronics headset was a perfect fit for me... The volume and sound quality were increased and I can wear it all day long with no discomfort...
Plantronics Ear Buds:
http://www.amazon.com/gp/offer-listi...&condition=new
Another unit I use quite frequently is the Jabra BT3030 (Dog Tag)... This little unit kicks @$$!!! Good audio quality and can be used in other was... Not the best for phone call as the included headphones I believe are designed to provide a bit more bass than the typical 3.5 headset which sounds great with music... I also use this to connect to my car or home theater and stream the music BT for a wire-free experience... It's nice to sit on the sofa and control the music from my phone again wire-free!!!
Jabra BT3030:
http://www.ecrater.com/p/8249317/com...ereo-bluetooth