Originally Posted by
Velognome
I usually carry CO2, two cartridges are plenty and it fits into a tool roll or small bag. Plus it's faster and easier than a pump.
+1 A guy at the LBS suggested it to me about 3 years back and I love it. That's not to say that I don't like to have a frame pump on a bike that has pegs and a nice pump available, but not all my bikes have pegs so I use CO2 in its place.