for me, it's not that my hybrid with 700x37 tires is uncomfortable overall, i can just tell a pretty noticeable difference in "road buzz" between my road bike which has a carbon fork and the hybrid which has an aluminum fork. the road buzz issue isn't serious for my short little 15 mile commuting runs to work, but it would still be nice to feel less buzz through the bars if the solution is really as simple as scrapping the aluminum fork for a carbon one.