Novak XRS ESC or LRP F1 Reverse
 

Got an option of either two ESC's just to run in for fun at the track/backyard etc. with 19T maybe 17T motor. The LRP one is no longer available and is hard to find specs on the net but I notice that the Novak one doesn't have a large heat sink like the LRP. I was leaning towards the Novak being alot smaller and assuming specs are similar