If you get a choice, go for 10.5 blinky. When the boost is removed the throttle feel is much better and the cars are easier to drive. 13.5 boosted is about the same lap time, but with the boost the throttle feel is a bit dead and it doesn't teach car control as well.
For 10.5 it is not easy to give settings as every motor/speedo combination is a bit different. I use a Hobbywing 1S with a GM 10.5 (later version with the adjustable endbell) geared at 65mm/rev with the endbell one set of holes anti-clockwise. A team mate runs the HW with an HPI Flux at about 70mm/rev with full advance on the endbell.
Balance motor timing with gear ratio. Do not go for more than about 20 deg timing on the motor endbell, and then find a gear ratio that gives you good punch between corners. Live with the speed down the straight that you then get, because gearing for top speed will make the car bog down in the corners.
Hope that helps, but come back and ask if I've missed anything.
