I find Wicked Spoon to be a very stylish buffet at a very chic casino (The Cosmopolitan). Be warned, it is quite pricey and definitely not casual fare. If you have a giant appetite and want giant portions to match, you may want to try something less expensive. But if you aren't put off by smaller portions and appreciate the the ability to sample more exotic selections, then you will love Wicked Spoon!
The food itself is very good, and as someone who leans towards eating more vegetables and grains, I think there is a bigger selection of healthy fare here that may make you more mindful of what you eat. How many buffets have that distinction? My absolute favorite part is the dessert area, and I highly recommend the gelatos. The flavors are really unique (PB&J, Almond Joy, etc.) and absolutely delicious.