I bought the Tom Tom Go 510 for several reasons- one of them being the bluetooth enabled speakerphone.

While I love the idea of the bluetooth, there were several challenges- when I tried to use the suction cup on my windshield, the GPS arm that was holding it to eye level let go, like it was too heavy and the GPS was constantly looking at my dash in my SUV- so I decided to  use Velcro and mount the GPS to mt dashboard. This worked great- except for one major problem- the speaker is on the bottom and the person on the other end of the phone can no longer hear me, although I hear them fine. I have...