Topeak Road Morph.

Seriously, why BOTHER with CO2? its another item to take up space and the road morph is like a mini-floor pump. I need to get one myself.

That said I currently have a CO2 and a topeak micro-pump. When I finally get the road morph, the CO2 will be thrown into the MTB/bike path bike bag, and the micro pump will be sold. I had a GT version of the road morph (kinda) and till the cheap plastic head broke, it was amazing. The topeak is a far far better pump