I have a turbo morph G pump and CO2. CO2 is good for my bikes that a frame pump does not fit properly. The problem with CO2 is that it takes one cartridge to find the leak and 1-1/2 cartridges to fill the tire. If the patch is leaky then it will take more cartridges. How many cartridges do you plan to take on a tour? Pumps don't run out of air. Also if you use the treaded inflators the cartridges are real expensive, get the type of inflator that does not use treaded cartridges and buy them at a sporting goods store for about $.50 each in boxes of 25.