Another vote for PVG here... ^

Shouldn't be too cold in November and well worth a visit. I would happily fly there just to eat dumplings from Yang's http://www.foodnut.com/584/yangs-fry...view-shanghai/

Do the Maglev train at least one way just for the experience, visit the Bund, go up the World Financial centre for great views, even visit the classical gardens in Suzhou if you have time.