I recommend a commercial machine if you truly want great espresso. Be prepared for heavy expenses, though.
Positive Product Points
Excellent steam capacity. Makes great espresso!
Negative Product Points
Difficult to keep running. Must be sent out for repairs which are very expensive.
Detailed Commentary
I think its a well-built machine with the potential for reliability. The big drawback is service.
I purchased the machine used. A new one costs several thousand dollars.