I built my own router table, but got all the components from Jessem --- table top, lift, fence with micro adjust, casters, stock guides.
I have no complaints. Not cheap, but when you get it, you will accept you got your money's worth. I got my components from Toolstore.ca --- prices were good and I am close enough to drive down and pick it up, saving the shipping costs. They were not showing the metric version of the lift on their web site, but when I contacted them, they said they could order that just as easily.
I am not familiar with the Sawstop cast iron table top, but agree that a perfectly flat cast iron table top would be great to have.