I'm also still considering the Shapton 1k 4k 8k which would be a lot easier. I just have to think about the Nani's though. And it turns out that a Nani 5k is actually close in micron size to a Shapton 8k and I think a Norton 8k. I don't have the chart on my laptop but its on SRP somewhere. which makes life even harder. Basically people have found (and the micron sizes of the different grits support it) that pyramiding nani 3k/5k is like a norton 4k/8k. Sigh.