Hi Peter,
I don’t have any experience of the Durfour’s but I have a Moody 35 and have done for about 7/8 years. Durfour have a good reputation I would say and well built. We choose the Moody because it’s “over engineered” and solid boat. At first we were unsure about the centre cockpit but soon got used to it and the great advantage is the excellent aft cabin arrangement. We have spent some money over the years updating her. She was a good example anyhow but we replaced sails, some rigging, had cockpit enclosure made, new stack pack. The best change we made was all the upholstery and curtains were changed and that really lifted her appearance. We always feel incredibly safe in her and she cuts through the water rather than sitting like a cork on the surface.
hope that helps, not sure what is/isn’t helpful, but the Moody 35 gets our vote, or a 36 as that is a great boat too. I guess it depends what is around and what Dufour’s are on offer in comparison.