Thanks for digging this up. I find the 2 models being almost identical. And as one can read in that thread there can be subcategories that one might consider.
My preference is still with the formulation Slava came up with:
1. it's slightly easier to think only about 3 buckets
2. category names are more descriptive
3. their explanation in the post makes them more approachable/easier to grasp than formulation in the Wikipedia page
I haven't read the book, nor did I know about Kano's model until today, so thanks again.
