Ive heard of one called Greens in Didsbury which always seems to get a good write up.
Never tried it myself though, but that's because I like a bit of meat and two veg
(Note to the hubby- Only kidding!)
Also there's another I've heard of called Earth Cafe (i think). Think it's somewhere on Oxford road, or in fallowfield or somewhere around there?
Interesting Fact for Veggies here! Did you know that Veggie curries have more fat than meat ones? Apparently because they absorb more oil in cooking- More boring facts where that came from!