I voted quality of food but I also look at the variety on the menu. It is nice to see a good variety to make sure everyone can find something they like.
Do you have a cost benefit graph?I voted "quality" But it really comes down to value, which incorporates many of the choices given. If I spend X, what am I getting from a value perspective? The quality may be good but the selection may not be, the service may not be, the ambiance may not be, the location may not be. So while I get a good quality meal, it isn't necessarily a good value. It can work in reverse as well.
We want: (1) quality food, which doesn't necessarily mean "signature" or Disney-expensive; and (2) something we can't get at home, whether that's a unique location (e.g., Sanaa), unique theme/entertainment (e.g., Biergarten), or unique food (e.g., Boma, Jiko, Yak & Yeti, or Tiffins).
Price is also a consideration, and this has caused us to start avoiding "all you care to enjoy" and character meals. For example, we always loved 'Ohana and it used to be a "tradition" to have our final dinner there each trip, but when the cost went up by 1/3 (making dinner and gratuity for our family of four a $300 proposition) and the food quality simultaneously went down, we axed it from our itinerary.