RE: Quick Micro RS4 Question
its not that brushless systems use more volt/amps than brushed, its that brushless motors use the volts more efficiently. so yes, using a brushless system with the same 6cell nimh will provide an increase in performance.
you should look at the Ezrun brushless system on ebay. i believe that the Ezrun 1/18 system is around $50.
if you want, you can go lipo 1st. i just got a used MRS4 and i use a 2s 900mah lipo(i use a low-voltage alarm so i dont over discharge the lipo, which only cost $5)
i already had the lipo for my blade cx2, but they only cost $15.
i think i will get the ezrun system for my MRS4 when i get the cash.