HeLlo all. If i wanted to buy one stone to kep my daily shavers going what would that be. they all have been honed by pros in the past but i need to up keep them and am starting to learn to do so. The stones i have are either cheap or old and i want something good. I have been able to keep them somewhat sharp with what i have but its time to invest. What would any of you suggest. obviously talking combo stones but norton belgian what?