I played with the SP Hard 1k last few days and I am beginning to change my mind about how it works with razors. Initially I found it caused a lot of microchipping, but now it seems to have settled. I find it faster than 1k Chosera for edge repairs, and it leaves about the same finish. I still prefer the chosera but this stone is a very nice alternative.
There is a new King for high speed steels and stainless , it is 800 grit I want to try and now because of you guys I have to try the SP 13k too. Oh well what's new when it comes to HAD he he.