I heard that Cedar's Cafe is the best around and it's a little drive for me too. In Derry we have a couple of places like Palermo's Pizza which has nice falafel but I don't know of any in Manchester. That seems like a good challenge! Let me know if you find a place that you recommend!
By the way, Derry has a new Greek place opening in Shaw's plaza. I don't know what their menu will be but I'm looking forward to it opening. It's just next to the coffee factory.
I haven't been in some years, but check out Ceasario's Pizza on Elm St. I know the owners are Greek (used to work for them 15 years ago) and they have quite a selection of Mediterranean foods. Well priced too.