With a question like that you might want to state the price range you are looking to spend.
I'd say in that car brushless is the way to go. Wheelers are hard on motors and brushless are fast, efficient, and low maintenance. I know the novak gtb has reverse profiles, not sure about the LRP system. You're talking big bux for either of those though. But a high end speedo for brushed motors is pretty high dollar as well.
Didn't even think to post what I run. I use an LRP Quantum 2 in my xx4 with a 9x2. No problems for me either. No reverse though. Both this and the above esc are great speedos. GTX doesn't have reverse either I don't believe.