AT&T, Cingular and T-Mobile. I know the AT&T coverage has been very good, IME.

Myrtle Beach is building up nicely for AT&T.

 

I'm in the Greensboro area.

 

I have a lesser version Sony Ericsson T310 that I just paid 75$CAD (around 55$US), with an inferior display, no BT but nonetheless it IS hand-free with an headset (included). At this price, it was even supplied with a case. I think that it is better to have an headset; less environmental noise.

I have seen BT kits that can be installed in any car for around 150$. For whatever reason, they seem more common in UK than in America.

 

Wow, I wish I can have BT built-in in TSX.

I had T610 with BT wireless headset. It works great. But nothing beats the BT builts right into your car. I believe BT in TL will pause the audio system and jump to the phone mode, isn't it?

T310 is great for the price. But once u try the wireless headset, u will not want to go back to wired handsfree for sure.