[Kevan]

Some advantages of brushless,
Quieter operation
No need to bed in the brushes when new
Performance doesn't change with time (i.e no brush wear)
Longer motor life
More efficient so less heat
Better power to weight ratio
More granular control i.e throttle and brake
Generally cheaper

Reason to try, 
person is less likely to die from boredom :)  [just kidding]

I'm fully aware of all these perceived advantages but a brushless setup isn't generally cheaper for RTR cars.  At ISRA level it probably is where a motor can cost £250 alone and you'll need a few of those.

A Revoslot motor is 10 quid, a brushless setup requires a motor an an E-com to drive it and that costs considerably more than 10 quid.

Besides that, I'm looking forward to seeing you get this setup properly and lapping consistently faster than a standard setup...without magnets.