Here is a very in depth review from Health Habits on the SKORA Phase and Core, even including a comparison to Base.
This is a great read if you're considering one model or the other. Doug has multiple review criteria that he discusses, which he feels are all important to a good shoe.
These include: Protection Proprioception Natural Foot Movement Weight The Drop Shape of the Sole Comfort Ease of Use Appearance Ventilation Durability Application
You can read the review here!