When open - The Wave, Grand Floridian Cafe, and Citrico's are all "go-to" places for me.
The Wave - it's atmosphere is "hotel restaurant" - but I've had great meals and service there. Both breakfast or dinner.
GFC - I haven't had dinner here - but I have had breakfast and lunch here. I find them to be a "relatively" inexpensive TS meal - with easy access to/from MK. Again - nothing but great service here.
Now - it's been awhile and the menu has changed a fair amount - but Citrico's was great for dinner. So - I guess I'm not sure where I would rank this recently - it's probably been three years.
All of the monorail restaurants (except maybe Chef Mickey's) - get great reviews from someone. They are a "must-do" for someone out there.
I'd pick based on what you think of the current MENU. Take for example - my SIL's favorite restaurant at WDW - Narcoosee's. I look at that menu and say "pass." Last time I was at Kona - I didn't like what I had ordered - but my prior meal was great. I was at Chef Mickey's once (as a character meal) - and based upon the timing of when I went - it wasn't crowded, buffet was spotless and full of fresh dishes, waitress was attentive, and I had a great time - but I can see how that place could earn its reputation as a crazy, so-so character meal/blah buffet. But its a fun location for kids to eat - that's for sure!
So - read the menus.....
Maybe generic advice would be to recognize that the signature restaurants on the monorail are fancier atmospheres and the meals tend to take longer. If the kids are used to sitting through longer table service meals - then taking them to those is fine - lots of kids at the signature places at WDW. I've seen lots of well-behaved kids at the signatures. But if you have kids that can't manage 40 minutes in a restaurant without a complete meltdown, maybe avoid those with them to save yourself the torture of trying to keep them contained that long. I've seen a couple meltdowns, too, with one adult carrying a screaming child out the restaurant - and the table packing that person's meal to go.... And when that meal might be 50-60 dollars for the entree...
