This is, hands down, the best HandsFree Carkit I have used. It was simple to use. The individual instructions for virtually every mobile phone were greatly appreciated. Calls were clear and the unit never failed. There was no re-pairing necessary (which happens often when I test these things).
I was also impressed with the build quality and the very complete package which includes not only the requisite manuals, but also car and home chargers, two sized sun visor clips and an earbud.
The BlueAnt Supertooth II is available at www.myblueant.com and various on line retailers for US$129.99.