Great, with growing pains
The sushi is fantastic, and the chef is great. Honestly, the sushi is outstanding, and the chef takes pride in his work. They *are* still going through some growing pains, so if you go during a busy time you may have to wait. I did encounter one disastrous service evening, but that's because they had a brand new waitress. I've had excellent food always, and excellent service during less-busy times. I honestly think they just need a bit more business to get over the hump and hire more servers.
Recommended: salmon roe and avocado roll
Food: 8
Service: 6
Ambiance: 8
Overall: 8

Fantastic Sushi, Great People
The sushi is excellent, and right now it's half-price (they opened several months ago and are still running the special). I'd eat there even if it wasn't half-price though. The sushi chef is talented AND very, very nice. You may have to wait a bit on a busy night, but it's worth it. I'd recommend going early, or other than Fri/Sat. They have many varieties of sake AND Korean wine.
Recommended: Mackerel -- the sushi chef marinates it himself and it's the best I've ever had.
Food: 10
Service: 8
Ambiance: 8
Overall: 10

Complete agreement
I work around the corner, and my co-workers and I agree with all previous reviews. The sushi is suprisingly good for the half off prices (which are still in effect as of 9/23/03). The service is terrible, as noted. We usually call in about 40 minutes before we want to eat, and then go pick it up, so that we don't have to wait. As above, the Korean dishes are ok. But if you even one diner is interested in sushi, the price is right.
Food: 6
Overall: 6

Great value at 1/2 off, if you can put up with the lack of service
Great sushi selection, and yummy complimentary salads if you eat-in. It's not quite Ginza, but at 1/2 off it's by far the best value sushi we've found! However, if they stop running the 1/2 off promotion, it won't be worth the hassle. The service leaves a lot to be desired! They take their time taking orders, and you never know if your food will come out in 5 minutes or 45 minutes! I have also experiences and observed mistakes on the bill, during a number of occasions. If you order take-out, be prepared to wait! They never start the order until you get there (whether you call 10 minutes before, or an hour before!) All that said, at half off, I keep going back! I guess I'm willing to suffer a little for good, cheap sushi.
Recommended: Karate roll, mexican roll, soft-shell crab roll, and anything spicy!
Food: 8
Service: 4
Ambiance: 6
Overall: 4

Decent Neighborhood Korean and Japanese.
If you happen to be in Brookline Village, and are looking for Korean and Japanese food, Zen 320 isn't a bad choice. It's not the best sushi in Boston, or even in Brookline (Oishii, Ginza, and Fugakyu would win easily, and I can think of several others that would be arguably better), or even in Brookline Village (I think Yokohama would win), but it is decent, and the pretty good Korean dishes are a bonus. When the restaurant opened, they were offering a half-price sushi special. If that special is still in effect, then I can't think of a better sushi value in Brookline. When you're paying bargain prices, it doesn't matter if the fish isn't cut as skillfully as at other restaurants, or if the rice isn't done quite as well. The Korean dishes were fine, although they also were not on a par with the best in the area -- and they weren't particularly inexpensive.
Food: 6
Service: 8
Ambiance: 6
Overall: 6

The Best Sushi
This place has the best sushi I've had in a long time. Fresh and tasty and quite the value.
Food: 8
Service: 8
Ambiance: 6
Overall: 8
- The Best Sushi