I have 8 shapton's plus the Lapping plate. But to answer your question, I use the 1K for setting bevels. I think you could also really use the 4K, 8K and 16K. With those I just mentioned, you'd be good to go, for the most part.

I also have a 30K. Once you get the hang of honing- the 30K will create an amazing edge. (Those with poor razor skills need not apply).

Sometimes I'll use strickly Shapton's- but most of the time I mix in the natural hones depending on what the razor responds to.