The basic $99 yellow raceceiver is what most racers would need. But like treecitytornado and Sandy pointed out, the earpiece can make a huge difference. I have the racing electronics ultra soft fitted earmolds. They are excellent. They are expensive and you need an audiologist to make the molds for your ears. They don't fall out, you hear what you need to and they are comfortable. I spent my childhood at racetracks, my teenage years at concerts and I have worked in automotive production facilites for 16 years. Now I usually hit 40-50 races a years and can't tolerate being around racecar anymore with hearing protection.