I visited Maguro Donya at suntec city based on a friends recent raving about their otoro don. At 39++ a set, it came with 6 glorious slices of fatty tuna rested on a bed of vinegared sushi rice. The set also came with a small bowl of chawamushi and a miso soup that was good, albeit slightly salty. But heck, the star of the show was the otoro. Deliciously fatty and melt in the mouth, the texture was almost akin to eating beef. Mildly sweet but so rich. The worst part of my meal was realizing i was on my last piece.
While definitely not the kind of meal, one would eat daily. It's definitely worth every dollar and such a good pick me up during the mid month slumber.