Loads and loads of good eats in Manchester, fabulous Chinese food in Chinatown, awesome Indian food in Rusholme, great pub food all over, Piccolino & Carluccios both do great Italian food in the city centre. I live in Chorlton and we have a handful of good eateries, The Lead Station is pretty good, the Horse & Jockey. And of course the Trafford Centre has all the chain restaurants you need....
Best Chinese food in Manc is definitely the Tai Pan on Upper Brook Street..yummy.
Of course it all depends on what part of Manchester you live in. Let us know where you are going to be. I have been in Manchester since 1993, so I have seen restaurants come and go!