Types of Espresso Machines, and how to Choose the Right One
Rancilio Silvia Espresso Machine
Espresso Machine Rancilio Silvia v4 with PID Review
Rancilio Silvia v4 with PID and compak k3 espresso grinder
Post your miss Rancilio Silvia picture
PID Retrofit Kit for Rancilio Silvia with Pre-Infusion - White
PID Retrofit Kit for Rancilio Silvia with Pre-Infusion - helps regulate the temperature of the Silvia within +/- 1 degree Fahrenheit, cutting down the number of variables that can produce suboptimal espresso by one (but it's a big one).