I’m not a big fan of all you can eat, because I tend to over eat in that situation especially if it is expensive.
The all you can eat “salad” bar at Texas de Brazil is fantastic. Roasted veggies, different types of lettuce, several dressings (I get the balsamic vinagrette) smoked salmon, rice, beans, delicious bread, thick bacon, olives, marinated mushrooms, tabouli, and more. If you also get the all you can eat meat you have choice of sirloin, tenderloin, sausage, pork, chicken, and I am sure I am forgetting something. It’s really easy to over eat. I only go when I get 50% off and then I don’t feel inclined to pig out too much, I just eat a normal, slightly too big, restaurant meal.
My mom and dad love Golden Corral, which cracks me up. They get the salad and baked potatoes and maybe a small cheat of something else to taste.
Japanese all you can eat can be good, not too fatty. I find Chinese buffet is fatty and gross usually.
I like the salad bar at Ruby Tuesdays.
I guess my answer to the question is I like all you can eat to have a lot of healthy options. I like the idea of Mediterranean food, grilled foods, lots of vegetables, baked potatoes, rice, soup, salads.