La Marzocco Linea Classic Semi Auto (EE) vs GB5 Semi Auto

Hi,

For the past few years we have been a roaster/retailer and we are (finally) opening a cafe and are torn between the La Marzocco Linea Classic Semi-Auto (EE) and the GB5 Semi-Auto (both 2-group). Does anyone have experience on both machines and think it’s worth the extra few grand to get the GB5? It looks like the main differences are the Piero caps and the “dynamic preheater assembly.”

We’re not opposed to spending the extra money if it’s worth it, but is it worth it?!

Thanks in advance for any insight.