if you never want to have anything else than digital phones (which I would not plan for at this moment) then you can go cheaper with the cables if you run them new.
I would however not run any new cables if you have already cat3 cables in place because like previously mentioned it will not give you any advantages at all and just cost you money you can spend otherwise.
Joe W.
FHandw, ACSS (SME)
"This is the end of the world, make sure to buy your T-shirt before it is too late"
Original expression of my daughter