[Chris Doughty]

I would have to disagree about the turns not making any differance, its just the same as it used to be in brushed, one brands 9T would be as quick as a lesser brands 8T

basically yes, lower the turns you loose some torque for RPM, but you would gear the lower turn motor lower so you would get your torque back and even on the lower gearing you would have more top end. the loose here is run-time.

in addition to brushed motor 'tuning' you have rotor size, its basically the size of the magnet inside the brushless motor, bigger magnet more torque less rpm and vice versa for smaller magnet/rotor.

you have it pretty much right on about the LiPo capacity, the higher mAh is able to deliver more current.

depending on your level of skill, level of competition you want to be doing and your budget will determin what turn motor you want.

as you say you are just getting back into it, it would not be wise to go with a 4.5 or 5.5 LRP X12 motor just yet.