I would rate M. Cafe 4 1/2 stars. I've eaten at both the Melrose and Culver City locations, and found the food to be consistent and equally tasty in both locations.
Probably my favorite thing to eat at M. Cafe is dessert -- the chocolate sacher torte to be specific. It's very chocolatey and has a fresh raspberry filling. Other foods I have enjoyed at M. Cafe include all three of the paninis, the melorse avenue muffaletta, the wasabi sweet potato salad, the sesame soba noodles, and the shiitake-avocado sushi roll. I was less keen on the squash soup and the banana millefeuille, but even these were not bad. For LA, the place isn't too expensive, so I recommend it pretty highly.