Tony's is my only must-go. Mostly because Lady and the Tramp is my favorite Disney movie and it's basically the only place to experience that movie at WDW.
Spaghetti is my favorite food, good or bad so I love it.
My bad experience was on my honeymoon though. I had been looking forward to that ONE meal for months and after we took our orders I had to use the restroom. Well, the restroom for Tony's has like, 3 stalls and 2 were out of order. I waited about 20 minutes to use the restroom (plus, women take FOREVER to use the restroom, I don't get it!). By the time I got back to the table my DH was done with his meal, I missed the waitress bringing out our special card and dessert, and my food was cold
But I'll be going back next trip