Re: co2 cartridges vs mini air pump?
Being terribly old fashioned I've always relied on an ordinary bicycle pump that clips to the bike frame. That way it's always there when you need it and what's more they always work. Even when I was riding motorcycles I would carry an ordinary old bicycle pump because they work just fine when it comes to fixing punctures on the side of the road out in the middle of nowhere.
The problem I can see with the CO2 cartridges is that by Sod's Law you will discover you have run out of them and have none in your toolkit one day when you're miles from home.
Money can't buy happiness, but it can buy chocolate which is almost the same thing
Home of the Kotanga Tramway.