That is up to you (the look you want), good quality hard wood floor should be ok for kitchen use, plus you can refinish it a few more times. For flooring, solid wood has many limitations due to the natural characteristics of wood. Expansion and contraction of wood from moisture and temperature fluctuation puts many dimensional restrictions on solid wood floors. But I think you should be fine. Just get the color you want, I think both are ok. Also the style how they are cut: flat-sawn, quarter-s