so, I have used many of the sony's, and the HCB-300 is the worst of the three I have used. the HCA-20, not bluetooth, and the HCB-30, older bluetooth were better. The HCB-300 does have some nice features, multiple BT device profiles built in, but the sound quality has always been poor and I found the cable attachments came out, meaning suddenly the mic wouldn't work, etc.

They MAY have updated it, and there IS a new sony version out there that should be available now.

As for Nokia, I have use the CK-7W: Advanced Car Kit which one can get for about 75$ on ebay. It has bluetooth and works very well. I find the sound and bluetooth connections are all top notch. I am more about solid connections and good quality sound, than bells and whistles.

The one you noted, seems $$$, but has a bunch of features.

There is a great company called parrott, which does similar devices for less $$, bluetooth and Caller ID, addressbook lookup, etc. They can be found in europe for much less than this nokia.

check out this website for some nice reviews, install quides, and all the options for your car or device.

http://www.siocommunications.co.uk/