Which ESC to back-up my MMM????

Like the title says, which ESC to back-up my MMM? I figure the MMM I just recieved could go up in smoke on me so which ESC would be a good choice to have waiting on deck? My setup is a Savage with tranny forward setup, Feigio 8xl and 4s 25C 5000 pack. Trans is locked into second and gearing is currently 18/47 but can be changed as needed. Also, I will be switching to a Neu motor, 1515 i figure, in the near future. I do not currently have an external BEC but will get one if needed.

Thanks in advance,

Darion