Well you've already pointed out the difference so I'm not sure what else you need?
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PASTELThe speaker doesn't presume that the hearer needs some stuff.Any and some in these contexts do not ring much differently in my ears. I'm not convinced these presumptions apply, although the theory seems reasonable, and it might function well in certain contexts.
The speaker presumes that the hearer may need some stuff.
Yohooo8Peco?! Do you like Peco? I have a collection of Peco and Poko but I don't collect paco!
Peco, you got a decent explaination.