What do you think of Semantic UI in comparison to Foundation?

I'm a foundation user, seen what semantic UI can do and it looks pretty impressive, but any library/frameworks has it's own strength points and weak points, so I would like to know some opinions from a hands-on users on semantic UI.

here is some specifics for inspiration:

• do you feel framework is updated frequently?
• do you have any annoying bugs with some supported browser?
• are you usually annoyed by the limited browser support?
• is it easy for you to write a component that blend seamlessly with other framework parts?
• do you feel it needs some complementary library like react?