Which is Better: 2 Hole or 4 Hole Steam Tip?

We often get asked whether or not a 4 hole steam tip is worth the upgrade on a machine like the Rocket Giotto Evoluzione. You definitely need to have more power to back up a multiple hole tip -- as was seen on the first iteration of the Rancilio Silvia V3, the boiler size did not match well with the 3 hole tip and folks got very lackluster results. So it's important to match the right tip to the right machine. Gail shows us how each performs side by side and gives her assessment on their benefits/drawbacks.