Oasis reports I think are great, they tell you the warrany and repair history. It will also tell you if the truck is still under warranty or has a clear title. Look on trucktrader.com , there are thousands of trucks w/ super low prices if you dont mind driving to pick it up. I just found a 05 F-250 in VA and bought it a week ago, found the truck on truck trader in about 10 minutes of searching.
I also was watching trucks on Ebay.