I have a similar question. I currently have Schwable Sammy Slicks (
Sammy Slick HS 414 | Schwalbe North America ). I like these tires alot as I often hit some off-road trails after work. A rash of punctures through the tread, including an annoying week and a half with a annoying sliver of glass lodged in the tire tread that I did not spot. I want something that can handle a tiny sliver of glass no matter what angle I hit it at.
I'm thinking of switching to the Marathon Plus Tour (
Marathon Plus Tour HS 404 | Schwalbe North America) or the Marathon Mondial (
Marathon Mondial HS 428 | Schwalbe North America). These are rated the same as the Sammy Slicks for off-road use-- 3 1/2 squares-- but I'm worried without the knobbies they may not be able to handle beginner/intermediate singletrack I take sometimes. Does anyone have any experience with these tires?