The Naniwa Pro, aka Chosera stones. 400, 800, 3000
2k Aotoshi, aka Green Brick of Joy.
Junpaku 8k, aka Snow White.
These are some of the top Naniwa stones you should be looking at unless you want to hone razors. Then the Super Stone 5k, 8k, 10k and 12k would be recommended, the Snow White too, it's pretty awesome on razors. While great on razors the SS would be my very last choice of stones for sharpening knives.
I like the Chosera stones but could never really warm up to them as much as I did my Shaptons when following a "set". However, I did discover that the Chosera 400 and 2k Green Brick make a killer combo and is ideal for non-PM steels. They are still some of my favorite stones for basic carbon and stainless steels.