One thing you might want to take into consideration is not the actual car itself but the support the dealer and manufacturer provides. For example, check the costs for common parts in the parts department (ie. such as brake pads, spark plugs, air filters, and oil filters) and also check labour costs if you don't do any maintenance yourself. You will find that these costs vary greatly between manufacturer. You car will not run forever without maintenance so it is essential that you don't buy a car with high maintenance costs.
Also consider past warranty issues that you had with your caravan (if any), how was the service? did you have to jump through hoops to get something fixed?
The last thing is to check the NHTSA (National Highways and Transportation Safety Administration) website for any safety recalls, complaints, defect investigations, or service bulletins for defects on the vehicle for the past 2 years. This is a good indicator of the quality of the engineering and/or assembly of the vehicle.
Here is a direct link to the search page:
Hope this helps.