Misaki is the best sushi buffet in the Pittsburgh area for sure. My favorite is the salmon sashimi, but the steamed crab legs are also great. I have a sweet tooth, so I'm a little sad about the lack of good desserts, but the variety of sushi definitely makes up for it. They also have a lot of specialty cocktails.
The ambience is a big plus--they bought this location from an Italian restaurant and seem to have changed nothing about the decor. There are still brick fireplaces and oil paintings everywhere, and the booths are very cozy. I love it, and will definitely come here again!