I would go with the Hyper and the JR XS3 Pro. If your racing a synthesized radios are almost a must. You don't want to sit out and watch at a race because you didn't have extra crystals. The radios that come with the Sportwerks and whatnot are decent, and better than the AM's but still not synth. Don't waste your money on a car just because of the radio it comes with.