Until recently I've been running tires with maximum pressures of around 80 psi. But I'm now riding a Bianchi Pista with tires rated to 120 psi. I run them around 110 - 115 psi. I got a flat today and had to rely on my mini hand pump. I was only able to get about 90 psi in the tire and got a nice bruise on my hand doing it! So I think it's time to start carrying some CO2 cartridges and an inflator. My question is whether there's any real difference in the ones available. I see a lot of them on Amazon but they look pretty much the same. Recommendations please!