What motor and esc combo is best for my Traxxas Corvette 4tec 3.0. Its currently brushed but I am want to upgrade its electronics (motor, esc, receiver.) I plan on buying a spectrum receiver as I've found it to be very good but, am not sure if I should spend the money in the Traxxas brushless system or if there is something better out there that's cheaper. Interested in going to 4s but looking at 3s right now. Also if any of you have a motor and esc combo your wanting to sell, lmk. Thanks.