I use the Plantronics Voyager 855. It is a BT earpiece that has an additional stereo ear bud that you can attach. It is very lightweight and has good battery life. There are different size ear gels that come with it so you can fit it to suit. The sound quality is good and it allows me to have a single headset that does everything. Micro-USB charging port so you don't have to buy some funky VPA, just get a new tip for the i-Go.
I got mine from Frys.com over a year ago for $99.99 and it still works great.
http://shop3.frys.com/product/532325...H:MAIN_RSLT_PG