A softer spring with the right shock will still corner really well, but it won't feel like your riding a farm wagon around town.
That is how my 350 used to ride and i thought it was worth it to keep the way it handled. Then I rode in a carli suspension truck with either Fox or King shocks(I don't remember which). Completely handled the same, but the bumps that had me bouncing off the seat would just make the truck move a little and that was it.
I am not saying everyone should go with carli, just that you don't have to have that harsh a ride.