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I think it's a good idea to follow Shapton's guidelines for all ceramic stones.

Don't leave them in direct sunlight or high temps.
Don't soak them too long.
Don't leave them near fans or air...

Well that's weird, thinner stone for more money. Anyhoo $106 is a good price I'd grab it.

You'd have to check your local prices but Naniwa also has the Gouken Arata range which is the Chosera but in 15 mm instead of 25mm & it has no stand or nagura supplied. Big price difference on the 10...