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Well, if you have a $100 to spend you could probably find a small (say 5"x1") vintage thuringian/escher and you're set having his recommendation. Or any of the alternatives should be good, after all...

Sounds to me that what you want to do is to simply maintain your razor sharp, which is completely different from honing it in the first place.
You need just one hone or even pasted strop or similar...