Our other concern between oil vs. water is the difference in color of the walnut. We did not stain and are pleased with the color - need to refinish because of adhesion issues - and have heard water-based products may result in greying or a cloudy effect. Any comments or experiences with dark floors and these products?
I personally don't care for the look of water-based products on dark floors. The film is white, and scratches especially show up as white. Water-based is great for maple, white stained oak, and other light floors, but for dark floors OMU or acid-cured urethanes look better IMO. Better yet how about a natural oil like Rubio Monocoat or Pallman with now film on top of the wood.