I have the Parrot CK3100 Installed in my 2004 Ford F350. I have had it for abour a year and a half now. It worked very well with my old Blackberry from Nextel. Actually, it never failed with that phone. I have recently switched phones to the Audiovox XV6700 Pocket PC. I have had many problems with the phone not connecting to the parrot and having to re-sync the phone and the parrot many times. I have updated the software in the Parrot. It may be an issue with the phone however. When the Parrot is connected to my phone it is wonderful. The person on the other end has never complained of echoes or distortion. For the most part, I am satisfied with the Parrot CK3100.