After stuggling with a couple of Sony Ericssons I just bought a Motorola V330. I avoided it earlier because I wanted to tranfer the phonebook in one lump rather than entry by entry. They didn't work well at all and it turns out that in only took me about an hour to transfer 90 entries with the Motorola so I should have gone to it first. Bottom line: it works beautifully with the Prius. I use T-Mobile but I don't think that's a factor in the Bluetooth performance. Patrick