My wife stops there every couple of weeks to grab take-out for dinner on her way home from work, and we've also enjoyed pretty much everything. The only thing that we probably wouldn't get again was the dal makhani -- very oily. However, we both love the chicken boti and my wife is a huge fan of their biryanis.
We, too, have noticed those reviews. I'm curious what "stories" you've heard. Obviously, that area by and large probably isn't accustomed to that type of food, so you'll get the "too spicy" comments, but to give 1 star because it was spicy to your palate is insane. Note, too, that I've seen other reviews by that Ryan H guy (who tends to write sprawling 4 paragraph reviews for places he wasn't fond of), and can just say this: he gave another restaurant a 1 star review because he ordered duck breast there, and they checked with him to confirm that it was OK if it was medium rare -- his response was along the lines of "poultry should be cooked all the way through, I don't want to get sick!". And he proceeded to knock them for this "unsanitary" practice. So yeah... that's some of the local yokels we're dealing with

. (Although I will note that there did seem to be some legit service issues when he was at Ali Baba).
Off topic, a new Persian place (Aladdin) opened up just north of here in the Algonquin Commons -- I mention it, because this, too, has been subject to these types of 1 star Yelp reviews, where people are angry because the menu is "confusing", etc. (and I can almost ensure you that this was their first experience with this type of food).