I'm still having problems with mine. Slow binding, servos buzz and sometimes the transmitter goes out (loose connection somewhere in the battery compartment). Very, very, frustrating... The guys where I bought it, have seen me go thru h@ll with it at the race track, came over and said to bring it back for an exchange. Lots of stress when it won't bind just before your race. I thought about it but don't want more of the same. I will buy a DX3R when finances are available.