Lately (for short haul international) smart bio offers a better earning rate per euro spend than plus. Not a lot better, but a notch better.
I don't get wy people think PLUS is half-way business. Business has been closed down ages ago. PLUS is just a renaming of the product previously known as 'economy extra'. But otherwise I agree with everything in the thread. It seems insane to limit 20kr chocolates, and a 15 kr beer in plus with the plus fares. This year I only bought plus when the cost was the same as GO.