The big "2" Aloris and Dorian are essentially in their own league for repeatability. Yes I know there are the Swiss systems and some other brands that will try to make a case for equality,but they are a blip on the screen.
I used to think my Phase II was great, until I realized I was constantly recalibrating my DRO after tool changes. Happened upon a used Aloris and my eyes were opened! Then I found a new Dorian BXA set for an unbelievable price and that was every bit as good as the Aloris. Does the average hobbyist need it? Well thats up to the hobbyist. I know that since my income depends on speed and accuracy, it is a no-brainer.
Sent from my Samsung Galaxy Note 3.