There is no faster or best esc. There are too many variables. Each have their own benefits. Just like picking a car, its what works for you. See what is supported at your track. Are there sponsored drivers local to you who can help you with the equipment?
Hobbywing may be cheaper. But the support reflects that as well. I'll stick with my Tekin esc's. If anything did go wrong with them I know I can get them fixed in a hurry. And I always know I can count on any of their sponsored drivers to help me out if I need it.