As a driver, you l9ikely have some mechanical views, so I suggest as one thing to look at is the way RV are put together. It is at least somewhat true that a person who makes his work look good will also make it better. So look at the things they don't often show us!
Take a flashlight along and do some weird, time consuming looking before buying. Much better to spend time shopping than time regretting. Use the time to pull out a few drawers and look under the dinette and into a bunch of those spaces where the wires and plumbing are hidden. You will often find that the Winnebago brand is far better at actually cutting things to fit and putting clamps and ties. It could be better but others are far worse. Many will defend to the death anything they can bought, just because they bought it! I try not to do that and certainly do my share of complaining, but I have also had a number of RV from other models and I came back to Winnebago as a better product.
Cabinets are one item to look over. Can you spot good wood from bad? Look at drawer corners for how the joint is put together. Some cabinets are made of wood you would not buy yourself! Look at the amount of drawings on plumbing, electrical and parts, then compare to what other brands offer for info! When buying again, I will make sure the drawings for the new one are on this site as I want to be able to fix the small stuff that goes wrong. You know from trucking that it's often not the engine or tranny but the dam filter or taillight that gives you the most trouble, so knowing where and how is half the battle of fixing!
Then there is the point of how you are supported after the sale. This site is one example of Winnebago being willing to go more further on getting you the info to maintain your RV.
Part of the wiring info for my RV?
More detailed wiring?
You get the same for almost everything on the RV. It does take downloading a different gizmo on the computer and using Windows but they do give you a vast amount of info. So much, I'm still looking for how to use find and use it all!
Why are smaller more expensive, Folks are willing to pay more to save more on gas and they do often like the small size. Most places do charge as much as the market will pay, right? Steak costs more than tongue because more people want it, not because it costs more to raise.
Take the time and enjoy the trip!