The last meal quest is a little tricky.  I have eaten at four 3 star Paris restaurants: Taillevent, Guy Savoy, Plaza Athenee (but with a prior chef) and Grand Vefour.  On the basis of those places and solely for the food, I'd go with Guy Savoy.  If I were wanting a selection of really fine wine, I'd go with Taillevent.  Just my opinion.  Frankly, all in all, I'd probably run out to Rheims to Boyer/Les Crayeres for my last meal, etc.