I don't know much about either of these Mancunian bands but I do know I love the songs World in Motion, Temptation and especially True Faith, so new Order I guess.
I have an online Manc mate though (who's a rag) who talks a lot about how great Joy Division are.
My tastes tend to be more stuff like Iron maiden, Queen, Nirvana, Alice in Chains, Linkin Park, Eminem, Saliva, Bon Jovi, Pink Floyd, Guns N Roses, Travis, David Bowie, Crowded House etc. I love music but I only like a select number of songs from many artists, I am not a hardcore fan of any band. I would say of the above though Iron maiden are my favourite.
By the way this thread was copied on Redcafe the other night, just a heads up. I look on their entertainment forum regularly as they're far more knowledgeable about books, movies, tv shows, music, films and games than they are football.