If you want the best espresso period, then you need this machine, or its little bro. the Linea.
Positive Product Points
The double-boiler keeps things nice and toasty and since the americano jet operates on a sperate one than the groups, you don't need to worry about temp. fluctuation during your pull. Marzocco is a hight quality machine and just loves to pump out shots. The aesthetics are wonderful, and is the best machine I have ever used.
Negative Product Points
There is a little issue with the steam tips that I was not too happy about. Basically one tip was a little different from the other, which made a big difference in steaming quality. I am not sure if Marzocco did this intentionally, but I would prefer both tips to be the same.
Also, we are getting a loud sound coming from Eleanor (the machine). The tech says that there is a problem with the coil and it will be replaced in a day or so. It would have been nice to buy a machine that didn't have any problems coming out of the box, but as with any 15,000 instrument with many parts, one can expect a glitch or two. So just as long as this glitch gets fixed, I am happy.
Okay, so I had typed out a nice little commentary on this machine, but then I had temporary terrets and deleted the whole thing. So if you want a great review, read Mark's review on the Linea or just stop by our cafe and let me give you an earfull.
Basically I'll leave it at this: If you want the best available (besides Kees' machines), go for the Marzocco. Seperate boiler and saturated groups provide great heat stability. And with an eight+ liter steam boiler, you could heat up the pacific ocean before she gets tired.
All that, plus being able to work on her while she is on makes this the one to go with.
I wasn't involved in the buying experience, but I know that we got it for a heck-of-a-lot less than retail.