I had a GT3C that crapped out on me the third time I used it. It just shut itself off while I had my $3500 baja sc flying across a parking lot. The onboard kill switch did it's job and cut the engine, but I had no steering or brakes. Wound up crashing into the back tire of my real car. I tried for two hours to find the problem to no avail, so in the garbage it went and ordered a 4pl. A really awesome radio!!