My thoughts on Dave's? It is convenient to where I live. They have things there that I can't find easily at Marc's (example: canned pumpkin).
Friendly service, easy parking.
My problem with Dave's is mainly that it is overpriced, in my opinion, for the quality and quantity of food. There's nothing about this place that makes it special. I'm all about special grocery stores...which is why I primarily get mine from Trader Joe's. But for convenience, this place wins.