I am with you, I still run older stuff in offroad, but thats a lot more about driving and set up. I did however recently switch to brushless and lipo for my carpet oval stuff and it is the way to go. I picked up a Novak Havoc esc and a 21.5 motor for less than $150.00 also scored 2 3200mah 20c Yea Racing lipos for $85.00 and run just as good as everyone else.
When the funds allow, I will be going to that same set up for my off road.
Switching to brushless/lipo was one of the best things I have ever done. I just have to figure out what to do with all the extra time I now have.
Go Fast, Turn Left, Repeat as needed!!
It's not as easy as it looks!