Trying to decide between La Grande Cascade and Le Cinq for a Sunday lunch. Spending a couple days in Paris, also doing lunch at Guy Savoy, and dinner at Chez Dumonet and Rostang. Will be doing a low key dinner Sunday night. I'm kind of leaning towards La Grande Cascade, since it seems they'll pair wines by the glass with the different courses and it's nice to not have to worry about that every once in a while. But in reading these pages, I kind of get the impression that Le Cinq is a can't-miss. Advice?