Originally posted by Eddie P
A solid brushed motor combo will cost 20 times less and be more suited for a 4 motored model. Because you are looking at so much model here, you will probably have to wire your motors in sets of two, with two different speed controllers. The Astro 204D is good for 60 amps continuous, and would be very comfortable running 2 motors at a time (like both inboard motors for one ESC, both outboard motors for the other).
Could you provide some numbers for this 20x cost difference?
I can still see an advantage, in using few controllers with brushed motors. But right now the easy of use and less maintenance makes brushless look pretty good.