A couple of months ago I changed over to Panaracer Pasela 26x1.5 and run them at 80psi. Our team weight is about the same as yours. My previous tires were 26x1.25 running at 95psi. We get a much smoother ride now. We mainly ride the road or bike trails, but recently did a Rails to Trails ride in southern IL. The tires did great on the crushed limestone, some of which had been freshly redone, so it was very loose.