I would be very interested to know the warranty differences.
I found some specs and noted the differences I could find.
Fourstroke 250
527lbs
gear - 1.75:1
85 amp alternator
ProXS 250
505lbs
gear - 1.75:1
85 amp alternator
Verado 250
600lbs
gear - 1.85:1
115 amp alternator