I was a huge, huge fan of 43 North and was excited to see what Muramoto would do with the space when they moved in. Luckily, it mostly stayed the same, but the food and service didn't live up to the former place. I had been to Muramoto in its old space with the same experience, unfortunately.
Overall, Muramoto is a decent average sushi restaurant with fine dining sushi prices. My biggest critique is that the food prices are too high. I don't typically eat that much, but I found it difficult to spend less than $30 for a filling meal. I understand sushi-grade fish is expensive, but it would nice if there were some affordable options on the menu in addition to all the special rolls. I've eaten at other sushi restaurants without breaking the bank, so it's possible. An ideal combo would be something like a $10 special roll with 1 or 2 smaller $3 maki rolls. I ended up going with the maki combo ($20), which was the perfect amount of food, but also more than I wanted to spend. We also got an appetizer. The drinks were also higher than I expected, but not atypical compared to other places in Madison.
The sushi was quite good, although service was spotty and it took a while for food to come out. I was with a group of 3 and the entrees also came out at different times.
The food is decent, so I would gladly go again, but I might try one of the entrees instead of the sushi to get more value for the price (maybe?).