We are very fed up with our Volvo, and are considering repower
Main options are Beta 50 HP or Yanmar 4JH5E, (53 HP)
I am well acquainted with the tech data, and see no significant difference on power, torque etc

Issues such as dimensional fit are easy enough to check
To me, key issue is reliability, (surprise!) both manufacturers claim is excellent

What is your experience?
Are the Kubota parts for the Beta engines really easy to find?