How does Les Chefs compare to Le Cellier...well, have to say it does not compare any better than apples & oranges. We thoroughly enjoyed both places (more than once) but they are not at all the same kind of restaurant. Not at all.
Le Cellier is basically a steak house...really good steaks & mushroom filet, a few other choices on the menu.
Les Chefs is basically a French cafe...good basic French food. Not actually known for their steak at all - I don't recall ever seeing a review of Les Chefs for steak...not to say it hasn't happened, but it's just not the "norm" (I think they have a steak on the menu, but it seems like most people go there for the French Onion Soup, superb cheese macaroni dish, duck, salmon, etc.)
Click on my May 2009 review below -- have both Les Chefs & Le Cellier reviewed in that one.