I carry a conventional long frame-fit pump, either Zefal HP-X or Blackburn, on each road bike and a short pump on the mountain bike and the UO-8, both of which take 65 to 70 PSI instead of 100 or so. I like the control I get with manual inflation, appreciate the economy, efficiency, environmentalism, and reliability of a pump, and have yet to perceive any tangible benefit of CO2 cartridges.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069