We used a high end DIY industrial epoxy. It looks good, fills in small holes, but stains with time. One thing we were incredibly with cautious was (and the recommendation of the industrial paint store) was power washing then degreasing the heck out of it. Without doing that, oil will resurface and cause bubbling (a small amount of which we still see in trouble areas). Our biggest killer is the metal bands on IBC totes on a wet floor leaving rust marks.
For about 1k plus labour, we can repaint an 1800 sq foot distilling room once a year to keep it fresh, or just let it go.