i have a 75mhz a/m a&e xp2 hand controlor and i know its cheap but came with my associates ntc3 car, i use it to drag race on my smooth street, im in a powerchaire and its easy to run my car by myself i have a hand held hook to retreve my car. i always use duracell AA. batt. in car and remote and keep them fresh.i do have a duratrax failsafe connected i have it set to idle and brakes on because my car ran away once already. lately i been geeting interference like wheels moving and throttle jumping when i start it up and while putting body on, and it kills more often with fuel in tank idles fine i did read about i should up grade to a fm mhz. well my question is can you put anything in the car like hpi or duratraxs or what about this i like price Futaba 3PM 3-Channel 75MHz FM Radio w/ R153F & 2-S3003 this seems affordable for me $129.99 . or this Spektrum DX2.0 DSM 2-Channel Radio System w/ Servos DX2 for $169.99 or this Futaba 3-CH 3PM Computer Radio 2.4GHz FASST System for $199.99. i dont see crystals in these like mind. any one of these will work as long as it is a complete set correct. any info ,,thanks.