Hello Angie.,
Reviews tend to be about brand new caravans and focus on layout and colour schemes, In most cases caravans for review will have been checked over with a fine toothed comb by the manufacturer of dealer and the obvious faults will have been put right before they reach the reviewer.
The satisfaction surveys are more about how the caravan has performed in the hands of real user's and as such are more likely to reveal any common problems with a particular model, as well as the most annoying.
Its as sad and proven fact that caravan manufacturers have an abysmal record as far as maintaining a high standard of product quality, An industry that congratulates itself on having a "good performance" whilst having about 20% or more of its products from new requiring attention needs to wake up to reality. It needs to drive the ethic of right first time from chairman down to through all its staff and employees, something that will never happen as long as they use piece work for production staff.
Having seen how some manufactures production lines are run, it hardly surprising appliances get damaged.
Because there is such poor consistency, simply relying on the results of a satisfaction survey and choosing the best performing manufacturer will still mean you have at best about a 1in 5 chance of receiving a new caravan with defects some of which can be serious.
I suggest you find the caravan with the layout that suits you best, Don't go for the cheapest deal if it means your seller is half way across the country, and whilst private sales of secondhand caravans can represent a great deal, the value of the deal can soon evaporate if you have no dealers warranty to sort things out for you.