I have this one http://bontrager.com/model/05264/en and it is the best pump I have owned to date. It works really well on presta valves and I can easily pump tubies up to 160 psig. It grabs the presta valve securely and releases easily without harming the valve stem connection to the inner tube. It works well on smooth stems, threaded stems, smooth deep dish carbon extender stems and high pressure tubulars. I have not tried it on schrader valve stems. YMMV