Brushless motors are nearly matenece free.For brushless motors you have to buy a special esc that will only work with brushless motors.Brushed motors you have to cut the comm and put on new brushes often.
Brushless motors I believe can take alot of volts too. Also they make more power and rpms, plus what they said up top. Brushless is the way to go, but will cost you more out of pocket.
brushless motors have the coils on the can(stator) and the magnet on the armature. since there is no friction from the brushes on the commutator, it is more efficient(better runtimes ) and doesn't have any maintenance except the bearings. I run a Novak 5800 system and i love it. it performs like a 10t and with GP 3300s i get over 10 min of runtime
Brushless is the best if you can afford it. And considering how much maintenance a regular motor needs, you probably can afford it. If you have any questions about BL motors, write or pm Josh, a new member here at rcnt. Hopefully he will get set up in the Manufacturters forum.
ped vroom, The biggest difference between the brushed and brushless motors is the maintenance. Your typical modified brushed motor is going to take quite a bite of maintenance in comparison to your brushless. Plus a hacker brushless will give 10% more power and about 30% more efficiency.