Must certain the second option if you look at pain, because of the lower concentration of nerves in the feet. :) you also have more strengt in the feet so it will be quick. Tough wood does not help in the strengt case.

Another factor you may way in is what do you use the most, like if you live in europe you will probably use your feet for biking to institutions or work( hand +). If you are from north america and are on age you propably have a higher chance going by the car to your where abouts . ( feet+)

There are alot of other factors so i would say spicify is the question.