the more $$ you spend the better the esc as in smoother and punchier throttle and braking along with diffrent profiles depending on the type of motor basicly any esc will work with a stock motor like yours but if you plan on getting a diffrent motor in the future you may want to purchase a better esc now ratter having to get a new one when you get a faster motor(if you get one a stock motor is really all you need for driffting).
OK...I think there's some kind of misunderstanding here...LOL
MORE turns = less power...you can use just about any ESC to run a 27T motor.
LESS turns = more power...you need a more expensive ESC to run more powerful motors.
For a 27T stock motor (like a P2K2 Pro, or stock Yokomo), just about any ESC will do the job. If you think you might want to get a more crazy motor in the future, you need to get a decent speed control now...unless you want to buy a cheaper one now and have to buy another (more expensive) one later.