get down the club your planing to race at,see what they drive and what engines they use,then make your mind up,imo a hyper{buggy} doesnt handle well enough for racing,i seen a few come down are track and with in a couple of weeks,they get something different,s works,losi,team associated,ect all make good racing buggys,it just which one suit you.as for engines that a matter of how much