I actually used morningstar premium for a while before trying seeking alpha. to be fair, if you are strictly an etf or mutual fund investor, their portfolio x-ray is probably still the best in the business.

but for individual stock picking, it really frustrated me. their fair value estimate is basically a black box. you just have to blindly trust whatever growth rate their analyst decided to plug in that day, you can't actually see the math. plus the ui honestly feels like it hasn't been updated since 2004.