I would suggest you go to
www.allearsnet.com and check out the menus. Click on Dining and scroll down to Menus. Once you click there, you'll see the menu for each and every Disney restaurant. There are also prices for each item on the menu. This will give you an idea whether or not the quick service plan would work for you.
I can tell you that we visited in August and we didn't have the dining plan as the trip was a spur of the moment trip. We ate counter service meals for the entire week and I have never been soooo tired of quick service meals in my life.
When I booked our 2009 vacation, I went right back to the
Disney Dining Plan!