Which Air Compressor should I buy?

If you want quality go Champion or Quincy. More money but worth it in the long run as parts will always be available. I bought my Champion used, put a new valve plate, gaskets and synthetic oil in it and it rocks. I'm into it $800.00. I got lucky and found it as I was fixing to order a new one from these guys: http://www.tptools.com/Air-Compressors.html But as with anything it all depends on what you want to do with it and how long you want to keep it.