I ended up with a Saturn. The fans are legion, there are older Saturns on the used market at very reasonable prices, and the curb weight is only 2,200 lbs for a 4 door sedan (SL1 model).
I found two with only ~60,000 miles before buying the one I ended up with (the color is a close match to my RV). And at only $2100.
Here's an extensive blog post I wrote about what goes into a towed after purchase:
Towing a Saturn
There are links to several publications, and various items needed for towing, along with mentions of cost.