Amitabul is fantastic.
This past summer, my husband's vegan cousin came for a visit. We tried most of the recommended vegan/vegetarian places in town (Victory's Banner, Lula Cafe, Green Zebra, et al.), and, with the exception of Green Zebra, I wasn't overly impressed.
Our visit to Amitabul was almost an afterthought - we had some time before her flight, so we stopped off. I was really blown away, and have been meaning to post about it. The details are pretty fuzzy by now -- the fact that we ate in a booth under a picture of the Dalai Lama and Richard Gere is about the only thing I can be absolutely sure of, but the food was very good. I had a large bowl of very spicy noodles with vegetables (I requested tofu be added, and it was no problem); my husband and his cousin had very similar items. I recall a good plate of potstickers as an appetizer, as well.
Service was very friendly, and I got the impression that our waiter was also doing at least some of the cooking. It's a small, homey place.
Sorry I can't be more specific, but I really felt it was great, and have been meaning to go back ever since. I live on the opposite side of the city, so I haven't had a chance, but I do highly, highly recommend it.
(I should add that my husband is a voracious carnivore, and he genuinely didn't mind the lack of meat products. It's such a cliche when talking about vegan/vegetarian restaurants, but you really don't even notice you're not eating any animal products -- it's just that good.)