Brushless
I have been running brushless for quit awhile now in a mod class. I think the novak gtb system is good but for 6 cell or 2 cell lipo it's hard to beat the mamba max system. It will handle more amps without shutting down.I have several systems a schulze u-force 75 with a hacker motor is very good but costs alot. The gtb is very fast but will shut down if it's overgeared. There are some really great choices out there and when mated to a lipo battery you have a very low maintanance system that have more power than you will need.