I have a great okudo suita 2.9 micron from sinichi, an atagoyama iromon 3.5 from maxim and a super fine natsuya from japan. They all have things I like about them but all are very different. The atagoyama for example is very muddy, the natsuya gives the best feedback of anything I've ever tried. I have a couple more jnats on the way, but wanted to know which are the favourites in your collection and why? Is there anything that has particularly surprised you (good or bad) with a particular stone, or type of stone?