I will be visiting Paris for just two nights in September with my husband (Thursday and Friday nights). I want to try a left bank bistro on the first night and had been convinced that Chez Dumonet was where we needed to go, but after reading numerous reports of the neglectful service and poor value I am seriously reconsidering. After reading a bit, Roger La Grenouille has jumped out as a fantastic looking alternative. I'm wondering if anyone has eaten there recently (or preferably at both of these places) and can speak to it? I can't find a menu online anywhere, but from some of the descriptions I've read it sounds like they are known for their frog's legs and duck confit. I'm looking for somewhere where we can spend a couple of hours enjoying 3-4 courses of traditional bistro foods (duck confit, lentil and sausage stew, foie gras, pate, cheeses... my mouth is watering) and good red wine without breaking the bank (say less than 150 euro for the two of us) and I'm open to other suggestions if people think another left bank bistro (preferably walking distance from the d'orsay museum) would be superior. Thank you!