Shaft all the way...got a 34 year Cub 125 original shaft and tranny never re-built....you wont get that longevity with belts...
I'm a Cub fan all the way, but other mfg offer Shaft drive
so this isnt a biased response. Get the shaft option regardless of Mfg.
A real sweet option on Cub's 3000 series is a shaft coupler drive system for attachments. This eliminates the older carriages, pulleys & belt systems of older models or 2000 series setups....The higher end Deeres & Kubotas garden tractors offer similiar setups...
Ducati996