I only like hotel and casino buffets that have an extensive offering of food or a good selection of seafood (specifically crab legs and u-peel shrimp). Not a fan of Chinese or Indian buffets since the food is pretty bad and/or the establishment is really dirty. There are a few exceptions to this but not many from what I've experienced. I must say that Korea has a good selection of seafood buffets at reasonable prices.

In terms of how much I eat, I eat till my heart is content and I feel I got my moneys worth. I usually just eat seafood and cuts of meat (prime rib, etc) since I feel I get my moneys worth from there. For example, I ate 3 fairly stacked plates of crab legs and 1 full plate of u-peel shrimp the other night for $26. Now that is what I call a deal! Can't beat a buffet that has both snow crab legs and dungeness crabs!