Not to hijack thread, but, are the "older" Nortons the ones that have a Italian made 4k and an American made 8K? I have one of these I bought from a member. The stones are stained, but seem to work well. (Well they seem to work well, but I am having a helluva time learning to hone with them!)
Also, @SOLITARYSOLDIER, like you said, there are so many choices. I am certain if you don't care for the Kings, they'll make great knife sharpening stones, but I have a feeling they will be plenty sufficient for SR honing. I think sometimes we "over think" these things. I know I am guilty of that.