Go Epoxy!
LIBoater,
I would recommend using epoxy paint. I painted the Vette side of my garage with epoxy, and my daily driver side of the garage with paint that is sold for garage floors. The daily side is peeling real bad, and shows alot of wear. The Vette side, where I do all of my work, shows very little wear. Both sides were painted within days of each other.
I do not have any experience with tile, but have heard that using floor jacks and other heavy equipment will crack the tile.
Hope this helps!
Bill