I'm going to get one: I want it to be able to tow my travel trailer and my blzer while on a flatbed goosneck trailer (35ft+). Things I know I want: a 4x4 an extended cab a cummins! I test drove an extended cab 4x4 2002 with a Cummins and an Auto. It was sweet. Things I don't know? What years and setups are the hot ticket? Can I get an older one (payments would be a lot cheaper)? Shortbed? Longbed? Dually? Oh diesel fans... please give me your knowledge.