The only advantage I see to belt drive is that the motor is off to the side so you don't hear it humming as much. That might be an issue if you are running it at night. The one in our house is belt drive and we've had no problems.

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1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma