welsh stones you buy on e-bay from this gentleman: http://www.ebay.com/usr/aj_1001. he has some 3 hone sets that are nice. you can also buy the separat. best lapping/flattening stone is DMT 320 ore Atoma 400. 1k you have naniwa super stone,naniwa chosera/proffesional stone, King, Shapton pro, Shapton glass.and i am sure there is several more.if you go for Shapton pro buy 1,5k. i think the 1k is about a Naniwa 800.