California Grill is a Signature Dining Restaurant and we enjoy the experience there. Spoodles is a more casual family style place. Both excellent choices, just different.
Even though CG is definitely a step up in quality, presentation and service, I would still pick based on the menu that appeals more to you as the food type is very different between these two places.
California Grill is my favorite. In fact going to be there this Saturday night, and I cannot wait. Spoodles is good also, but if you are looking for something better than ordinary, then I suggest Calif Grill.
California Grill is not only my favorite restaurant at WDW, it is one of the best restaurants I've ever eaten at. With the view, you truly feel like you are getting the full Disney VIP experience.