BZ13 machine was the first Bezzera machine i bought for my office. I took that primary because of the automatic buttons to dispense the dose to score productivity points for my PIC claim.
I remember I don't taste much difference between the E61 and BZ except the notes on the BZ is slightly clearer. I don't like E61's higher start up time, I read that the preinfusion is better on the E61, can add a better body, bit more forgiving but may get coffee more intensified/bitter. Also due to the bigger brew chamber, there's more space to trap more oil that can go rancid inside and affect the next cup.
Strega is like a high definition surround system which you can hear the drop of a pin.
BZ/E61 is like decent 2.1 point speaker system.
If given a choice, I should had bought two Stregas because I later found out that Strega was also in IRAS approved list in the PIC claim.
With the Strega, I could use blends that are robusta loaded, dark and squeeze in lower pressure, and eliminate most of the bitterness, bring out the fruitiness and at the same time enjoy the body from a dark roast. You can nv get the same result with the BZ.
