If you track has the new RC3 decoder with the LCD screen on it, they can get a free upgrade when the RC4 comes out.

Everybody knows AMB is overpriced and they are, but they have a chokehold of lap counting in ALL forms of racing-Motox, nascar, rc, etc. The one good thing is that the AMB decoder's last for years and the transponders last for years also, and they are extremely accurate.