The place gets really busy, so be prepared to wait. They have a new separate lounge where you can get drinks and snacks while you wait, though I wasn't crazy about the bar snack selection. The drinks are pretty good. Or if you're lucky, you can grab a seat at the restaurant bar and order menu items from there.
The selection of sushi/sashimi is pretty good. Nice variety to choose from. If you don't have strong preferences on fish, the combo platters are nice because you get a variety, but it is chef's choice. Same goes for the maki combo plates. Depending on the server you get, some will ask if there are strong likes/dislikes of any fish.
They also have a decent menu of fusion items. The miso cod is really great. Though I wish they would do something with the rice instead of leaving it plain. The steak is also really good, though not a huge fan of the potato salad that comes with it, but it can be easily swapped out. Their appetizers are all really good too. The scallops, the crab cakes and the pork belly are steady favorites. The miso soup can sometimes be a bit too salty (I really like salt, so that's saying a lot).
Overall, in terms of sushi in Madsion, Sushi Muramoto is as good as you're going to find. Afterall, WI is not a coastal state, so the quality of fish will never compare to say, SF or Seattle. But they do ok here.