Originally Posted by
caloso
I'm a belt-and-suspenders kind of guy so I usually carry both. If I'm on the way to work and am running late, I'll use the CO2. It's much faster. On the other hand, if I have time, I'd rather save the cartridge and pump by hand. It's the same reason I carry both a tube and a patch kit.
I prefer the C02. I have carried both for years, but when I got a new bike I left the frame pump off. With good Kevlar lined hard-case tires I haven't had to use either on my own bike, just to help out other stranded bikers that had neither.