I described the floors in the living room and dining room after pulling up the carpet: oak around the outside, pine in the middle. In July, my brother-in-law, Junior, sanded and finished the floor. (He also painted the living room, dining room, stairs, and upstairs hallway. Because I asked his advice on how to reach the walls in the open stairway.)
Sanding down the floors, the difference in the living-room was more marked than in the dining room.
The finishing turned out beautiful. Junior is the Energizer bunny. We used the water based polyurethane, it takes more coats but a new coat can be added every two hours. Junior was up in the middle of the night adding a coat!
Unfortunately, cats drag racing through the house seems to leave more scratches. Whether it is the pine or water-based varnish, or a combination, I’m not sure.