Due to my love/hate relationship with my road bike it’s got some 25mm Schwalbe Blizzards at the moment (I was having a hate day when I bought them clearly). They’re black, circular and haven’t punctured yet. They do spin on ironworks and do feel a little sketchy when really pushed over, but only when I’m deliberately trying to upset them on an off camber 30mph corner. But they’re wearing really well, they’re comfortable, even on A and unclassifide roads (anyone else have the strange disparity that A roads near them are horribly chewed up, unclassifide roads are rough but a price worth paying for trafic free riding but B-roads are like billiard tables?). And I don’t care if they get cut up after just a couple of 1000 miles as they didn’t cost me £40/£60/80 a pair (about £20, for the kevlar version!).