The oak countertops are my favorite new thing- I never thought wood was something appropriate to my messy, sometimes grungy kitchen. I used 6 coats of Waterlox, a tung-oil and resin-based finish. Spills wipe right up, even a day later, and there are no white rings or dark rings. Nothing soaks in. The finish dulls a little when water is left standing for a day, but you wouldn't even notice unless you peered closely. We treat our countertops roughly- though no direct cutting on them- and they haven't chipped yet. If they did, it's easy to recoat or touch-up.
So far we've probably spent 2800-3000 on this kitchen, for a complete re-do. I kind-of regret the new steel-look appliances- they seem cold and not very vintage! How do they look so great in period kitchen magazine photos?