Only thing I will add is it seems the seals on CO2 pump wear out faster and you end up spraying CO2 everywhere but the tire. In my 25 year road riding career I've averaged about 1 flat per year, but a couple of months ago I had a 3 flat fiasco. Because of that I got a mini pump and a couple of weeks later had another 3 flat fiasco!
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N = '96 Colnago C40, '04 Wilier Alpe D'Huez, '10 Colnago EPS, '85 Merckx Pro, '89 Merckx Century, '86 Tommasini Professional, '04 Teschner Aero FX Pro, '05 Alan Carbon Cross, '86 De Rosa Professional, '95 Gios Compact Pro, '95 Carrera Zeus, ‘81 Masi Gran Criterium, ‘81 Merckx Pro, ‘89 Cinelli Supercorsa, ‘83 Bianchi Specialissima, ‘VO Randonneur, Ritchey Breakaway Steel, Rivendell Rambouillet, Heron Randonneur, ‘92 Ciöcc Columbus EL