A cafe local to me roasts their own beans. They are very good. I use them to make espresso at home. Today, I ordered an espresso from them. They have a $34,000 La Marzocco machine. They espresso was terrible. What I make with my Gaggia Classic with an Auber PID controller is so much better. What do you think the problem was? Tamping? Beans going stale in the grinder?