Thanks, just reading a bunch of old threads and some people did comment negatively on the ride quality of the marathon plus. Got me looking at the Supremes but that's €100 for a pair! Not saying no, but I'd want to be damned sure of my choice before spending that much.
So just to clarify I only ride on the road. It's Ireland, so it's wet a lot of the year so grip is important. I'm a big dude (225lb) and ride 65psi on my road cruisers. Comfort is important as I currently get crazy vibration on a few badly paved streches. But speed and durability is the greater priority as I think anything other than a fat mtb with front suspension will have issues with that.