I missed eating sushi in San Francisco and Takara didn't quite cut it for me, so I tried Wasabi.
I have to say that Wasabi's sushi is comparable to what I had back in S.F. -- They have good, fresh sushi there and their California Rolls are pretty addictive. My biggest issueis that the food is pretty pricey (I pay the same price or a less in S.F. and I get extra goodies like free tea and dessert), but otherwise the place is cool.
Definitely worth it when you're not flat out broke and you're looking for something good to eat in Madison.