I have carried a few different pumps but now only carry CO2 and three or four cartridges. First, I had a Road Morph, it worked well and I could get to 120 PSI with some effort. When I changed bikes, I didn't want to hang it from the top tube so I bought a Blackburn frame pump but I couldn't get enough air into the tire. I went to CO2 and have never had more flats than I have cartridges in the four years that I have been using it.