Accept no substitutes - insist on Redline!
One day I asked the guy at work wearing the Marzocco espresso machine jacket - their thank you for all his business, what sort of beans he was drinking. He immediately said "Redline!" and I have heeded his recommendation since that day many years ago. The balanced, robust flavor profile, the proper medium roasting and consistently delicious espresso from our Rancilio Silvia get our most hearty and full-throated endorsement.