Bluetooth Speakerphones

[jensaks]

Hi,
I'm looking for a good bluetooth car visor device. My son uses the Motorola T505 Bluetooth speakerphone and loves it, but it's spendy. He really needs it for his work, so the price makes sense for him. I will need to do something as of January 1, when the laws in Oregon prohibit driving while talking on cell phones. I don't care so much for myself because it's just for my convenience, but my husband will need something good for work and I don't want to waste money on something that doesn't work well. I just ran across a great price on the Motorola T215 Bluetooth and was wondering if anyone here has used that one. Do you have an opinion as to which is better? I'm not so concerned about streaming music, as I have a nice sound system in my car.

Also, something I can't seem to clarify: if I'm listening to AM radio do I have to switch the radio station when a call comes in before I can answer it? Or does the device switch for me? I think I know the answer to that, but wanted to hear it for sure.
Thanks!
Jennifer