RE: Is the Slayer upgadedable?
you can't get parts for redcat at the local hobby store
there are far more places where you can get parts for traxxas vehicles, it's better to have 15 places to buy parts rather than 2-3
traxxas has been around longer, and you can buy any traxxas product knowing you will be able to get parts for it 5 years later
if redcat decides to stop importing parts or goes out of business your vehicle will be useless , unless you decide to track down whatever vehicle they copied and find parts for that (which will be hard too)