The Motorola T505 looks cool (kinda reminds me of a spaceship), and sounds great. The built-in FM transmitter is cool and so too the A2DP music streaming feature (Advanced Audio Distribution Profile - audio streamed from one device to another over a Bluetooth connection). It was pretty straight forward to set up and calls that I make or receive are pretty clear as well.  Overall, I think the T505 is a good choice for hands-free calling.