I think most any Canon/Nikon DSLR from the past 12 years could be a candidate. If you have a camera shop nearby they normally take trade-ins. I do not know if you are more interested in a full-size sensor or an APS-C sensor, it will make a difference when shopping for lenses. For Nikon, I would look at D70, D80, D90, D7000, D7100 in the APS-C category. They have a lens auto-focus motor in the body that will allow you to use older film lenses with the autofocus capability. The cheaper Nikon bodies omitted that and they relied on lenses with their own autofocus motors (which most have now).