I have the Rino 110 as well. My only complaint is that it didn't come with all the required hardware. If you want to download into it, you have to by extra hardware. I got mine for fathers day, now I see there is an update available but I can't install it unless I order some communication cable. The cable should have been included in the box!

As for accuracy, I tested the unit. I put on a blind fold, and had my buddy drive for 1/2 hr. Then we switched places and I was able to retrace the exact route. Great little unit. As for the radio, haven't tried that yet.

Even though it doesn't come with all the hardware, I'd buy another in a second!