Thank God you plan on both! The headsets only at Nitrofarm suck big time! As a racer you lose that sense of connectedness with your vehicle and as a marshall you have no idea what's going on. And let's not talk about how the headsets and radios get in the way of properly marshalling-if I can't hear your motor whine I may not marshall you!

It seriously detracts from the racing experience by only having the FM headphones. However, by having both one could listen to what's going on at a reasonable volume while in the pits without blasting the tracks' neighbors. Good call IMO.