I have the original Motorola Roadster.  I bought it from Verizon and love it.  So of course, I was expecting something great with this "upgrade."  I charged this Roadster when I received it and followed all the directions for it.  The next morning, I was streaming music in my car, and it died not twenty minutes after turning it on.  I thought maybe it was defective, so I returned it and got a new one shipped to me.  It did exactly the same thing: streamed music and it died about twenty, thirty minutes afterwards.  So I sent it back for a refund.  I was hoping for something fantastic, but it definitely didn't live up to expectations.  I don't know if it's because it has double the speakers and output, but it was saddening.