Have both the Lezyne Road Drive and Topeak Race Rocket (among 1/2 doz older mini-pumps). Both work well and have hoses so as not to stress the valve stem. The chuck and hose arrangement on the Topeak is slick. Between the two I'd pick the Topeak. My wife got a flat yesterday and changed the tube and inflated the tire using a Race Rocket HP. The HP version is smaller in diameter than the straight Race Rocket so it takes less effort (but more strokes) to reach pressure.