So, by chance not choice, one of our cars is going bye-bye. It has served my wife and I for many, many years but our 14 year old Camry is in need to more work (and money) than we are willing to put into it. Since my original commuter (88 Trek 800 dropbar conversion) needs some love and work, we picked up a new Trek 1.2C for my commuting and riding enjoyment. I haven't had a bike with 700x23 tires in a long time, and the old pump I used to have has long since bit the dust.

What I wanted to know what what do you all carry for a pump and are the CO2 style pumps worth it? I want to avoid a on-frame pump if possible so I am guessing the CO2 pump would be the way to go?