Speed=Better? NOT!
Since this is your first car.. I would rather consider other things like
Is it durable?
User friendly?
Easy to Control?
More than speed. In my opinion, 40Mph+ is decent enough to enjoy.
ITs your call, but I bought the HPI RS4 SS. I had a fun time building it and even though it hasnt been fully broken in, its a screamer! The RTR shouldnt be far behind.
-ram