What is your opinion of the best radio for Oval racing? I have been using Futaba and getting back in after a three year absence, I hear their new "Fast" system has problems with 4-cell if you do not use a reciever pack. I really do NOT want to have to use a receiver pack. Wouldn't mind a spektrum type radion but am no adverse to changing crytals, been using an old 3PK (feels comfortable) and since almost EVERYONE else has a spektrum type I have not had to change crystals anyway! Lets here some suggestions. Thanks Ralf ps am on a budget but will spend more if I have to.