[captain harlock]

You have to go with a top notch ESCs( Schulze 129.18 or 149.18 or a Micro 12020-15020- the micros come with large heat sinks, BTW, the Schulzes dont. All of these are around the 400-500 dollars). Mostly any brushless motor will deliver you top performance, but if you want to race against a real high quality engine , like the Novarossi for example, I would go for a Lehner 1940-1950 motors( around 7-8 turns) with 4-5s lipos. The Plettenburg is great, too. These highend motors are built with extreme precision and they stay cooler than most brushless motors with high effeciency and more torque. These motors are between the 270 and 340 dollars. They're worth it, IMHO.