Not much lower huh? $87 shipped compared to $115.........If you have the money to waste cool. As for me I'd rather use the left over money for parts! And yeah the rc4 is only like $90......but if you go to a track using rc3 you are S.O.L! My local tracks use both so it was either a hybrid or one of these and honestly they're smaller and nicer than the mylaps IMHO.