Choice of HobbyWing 150A ESC Combo for 1:8 electric buggy

Which one is more suitable for 1:8 electric buggy run in Lali?

1) XERUN Power System w/ 150A-SD ESC XERUN-4168SD Sensored motor (2250KV)
   http://www.hobbypartz.com/07e-combo-m5a.html

2) HobbyWing 1:8 M6A Brushless Combo w/ XERUN 17T 4274SD Sensored Motor
  http://www.hobbypartz.com/07e-combo-m6a.html

3) HobbyWing M3 1/8 Brushless Combo w/ XERUN 4274SL 2000KV Brushless Motor + 150A Brushless ESC Version 2
  http://www.hobbypartz.com/07e-c-combo-m3.html

Should I choose the sensored or senseless motor?
Any other suggested model for HW combo set other than above?

What no. of motor pinion is good for Lali track?

Thanks!

HobbyWing 1:8 M6B Brushless Combo w/ XERUN  4274SD 2200KV 4port Sensored Motor & LCD setting card

最緊要留意車架夠唔夠位放。4274成7x長。