A friend and I meet here for a lunch a couple of times a month. We always enjoy sushi, and occasionally one of the other lunch specials.
The service for lunch is prompt, and professional, however; I have never eaten dinner here.
It's a tad pricy, but the food is excellent. Compared to some of the other places I have been in Metrowest, it is the best sushi. I also like Minado in Natick (it's all you can eat sushi, that's like being in heaven!), Ichiban in Ashland and Samba in Framingham were very good too.
I like the quieter atmosphere in Oga's - it's relaxing.