I've got no complaints with my stock Dunlop D250's. I bought another wheel and tyre from a trike conversion, so I won't be changing brands anytime soon. should be good for another two years now. Was seriously considering the Avons though. The back is going to go before the front, so when I swap wheels I may have a new tyre put on the front anyway, that way when I need a new rear in a couple years, I may go Avon then. Not going to worry for a while though.