I've got a JoeBlow Sport - no problem putting 110/120psi into tyres. My only complaint is the difficulty in sourcing just the rubber washers for the presta side of the pump head. I really object to having to buy a whole rebuild kit for the sake of a 10p rubber washer. They are avaiilable to dealers but I've yet to find them stocked. Anyway, the pump's good, and I've put a Topeak brass chuck on mine, which suits me.