Trolling Motor Advice - 36V Lithium Batteries

Need some advice to either fork out the money for the more expensive batteries or go with a cheaper one.

Prices and warranties certainly range all over the place, so is it a ‘get what you pay for’ scenario or is there a clear winner, one way or the other?

Trolling motor in question would be the MinnKota Instinct Quest on a 22ft Illusion.

Thanks in advance