Inexpensive wine pairings?

I am throwing a housewarming party for 20 around mid January. I am planning to have multiple pasta dishes like Lasagne and Alfredos and was wondering if anyone could suggest the best wines to try and pair up that have good flavor but are also reasonably priced. It seems that everyone wants to contribute a bottle but I would like to keep it to a single red and single white so that we aren't all switching. Any help would be appreciated. Thanks