I will warn you of the super high Kv motors. If you are not after strict top speed passes then it will be useless to you. Even in its intended application, the Castle 9000Kv is for short bursts only. Even the 7700Kv is way too fast for most 4wd racers, but at least you can run it for more than one or two passes before needing to let it cool down. The 5700Kv is more than fast enough for anyone who actually drives their cars.

I have had bad luck with Novak brushless systems, so you wont hear that recommendation from me. I loved them back in the brushed days, but too many BL ESCs from Novak have fried on me. Some other guys have had good luck with them.
The Mamba Max Pro is the Ultimate ESC in my opinion. Not only is it super amazingly robust, it can handle more power than any 10th scale chassis can. Plus, you will not be limited in motor choices. It will run just about any motor you can find.

I would recommend the MMPro, with one of the popular sensored 10.5 motors. Here I dont mind recommending Novak, because the motors have always lasted me. But most of the top companies motors are very similar.
The 10.5 would be faster than a 27T brushed motor, but still easy to drive, and give extended runtimes.
Then I would get a Tacon motor in high Kv for showing off or parking lot bashing. The 4420Kv or 5900Kv would be very fast, but it shouldnt kill your gears.