Looking to buy a BT GPS unit for use with my 650, as well as tomtom maps. The BT-338 has received great reviews, but I haven't seen much about the Tomtom BT GPS unit (other than some posts that Globalstat may be actually making it).

As previously posted, buy.com has a good deal on this thru tomorrow. Does anyone have any info on how the Tomtom unit actually stacks up against the Globalstat?