Variant vs feature explosion

[Jacques Le Roux]

Hi,

Reading Product Entity comments, I know that "variant explosion will work to 
about 200 variants and feature explosion has almost no limits". 
I see also that with feature explosion you can give a price to each feature 
(right ?). 
It seems also, from some comments I cursorily read, that feature explosion can 
take more time to compute. 
Are there other differences, at the business level, between this 2 
virtualVariantMethod  ? 

Thanks

Jacques