I just bought 3 Naniwa specialty stones from a shop that was selling them for half price. They are the 800 sp-408, 3000 sp-430 and Super stone 10000 S1-490. My question is which stone do I need next? The 8000 S1-480 or the the 5000 S1-450. Also would you recommend me getting the S1-491 12000 or is the 10000 good enough?
Thanks
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