If you treat your stuff right you will never have a conflict with Spectrum. I race two times a week and have never had a single problem. Mod and stock sedan (down to a 7 turn), Mod 4x4 (you have seen it), gas truck, Buggy and sedan. It never missed a beat.
However, I have seen some guys have problems with certain BECs not being quite right but that is a different issue. When they are hit hard while comming out of a corner they would dump all of the power to the motor. This will starve the Spec receiver and make it go failsafe.
Conflicts???? I've raced with hundreds of every kind of signal you could imagine. At T&T we even have a police station right over the door that is broadcasting all kinds of stuff.
What kind of conflicts do you see?
What TX do you use?
Seems very odd.
The radio is crazy. At the end of the day I would only get the colored wheel.
Not worth it for me.
Come run some gas with us.