What radio are you currently using? If you bought a RTR Cen buggy or truggy, I am going to guess you have an Airtronics MX-3? If you do use that radio you may want to look at getting the Airtroncis MX-3 FHSS. You will be use to the features if you currently use the MX-3
http://www.amainhobbies.com/product_...ducts_id/16275
If you shop around you may find it a little cheaper