I've been here twice and have enjoyed it both times I've been. I've gotten the Chicken Curry and the Chicken Vindaloo. My first visit I was given the option to choose the spiciness of my Chicken Curry on a scale of 1-5. Being a fan of heat I chose level four... after going through several glasses of water I shortly realized I could have chose level three! The Chicken Vindaloo came in level 4 only, but in didn't seem to have as much heat as my first visit. Moral of the story: Don't underestimate the spiciness of Indian food!
The serving sizes were enough for me to have a large amounts of leftovers for the following day (which I like); not to mention the rice seems to be unlimited so you could end up going home with more than you know what to do with! Yum!
The servers were pleasant but spoke poor english; but I enjoy Guru and will return nonetheless.