My Birkenstocks are about 8 or 9 years old and completely worn out. I have to get a new pair as it is the only shoe that will fit me. I have short, wide feet with a high instep. I have been looking online and they have a new soft footbed available. I have never had any trouble wearing new Birks, so is there really much difference? It is going to be hard to budget for new shoes, and I don't want to spend the extra money for the soft footbeds if there isn't any reason to. I appreciate any input you can give me.