A while ago I bought the Atoma 1200 diamond plate and I've been very satisfied with it. It sharpens fast and consistently and produces a very good edge. I decided to also try the 6 inch DMT extra extra fine (8000 grit) to take it to the next step and I'm glad I did. This plate produces the best edge I've ever seen. It's a highly polished (not that that matters) and durable edge and it takes no time to get there. I bought it just after the Atoma and it's breaking in nicely as you can see in the picture. It hasn't yet reached its end grit but it won't be long now. The only down side is that you have to use soapy water. With just plain water the back of a chisel just glides over the plate and nothing happens. You really need to break the surface tension of the water. The plus side is that it keeps the plate nice and clean. And of course it will never dish.

