I am refinishing my Nav table. It is a teak veneer. It had some kind of a hard finish. Either a varnish or a polyurethane. There are some water or mildew stains that have made it dark in places, so I need to bleach those out. The rest of the interior is either Formica (counter tops) or an oiled teak veneer, which I have oiled and treated with orange oil and look good. The nav table gets a lot of wear so I am thinking that a hard finish would be good. So, a varnish or a polyurethane? I am interested in hearing your experience.