Trying to decide on servos for KMP Beaver w/Gas engine. They're all have similar pricing:

HS 645 MG

HS 625 MG

HS 5496 MG (Digi Hi voltage)


I like the DIGI Hi woltage, but mostly looking for dependability and no SLOP.
I was also thinking of water resistant servos, if they are not to expensive. Any ideas? Thanks