Airstream>>

Still of my original opinion that making lists of likes and dislikes and then sitting down together and sorting it out is the best way. There is a part of me that would love a moderately sized/priced Class C. DH has no interest and definitely no interest in spending that much money. If he came home and found one sitting in the driveway...... I do remember together deciding that my current vehicle needed to be replaced. We had a price range agreed upon. We had looked at several and found a couple of models we both liked, but no movement on decision. While he was at a week long business meeting, I had some spare time and went shopping. Found the right car at the right price range and bought it. Didn't bother to mention it until he called that evening. At the time I thought it was a good idea. NOT HAPPY!, to say the least. Ultimately, he did love the car and could live with the pricing and payment arrangements, but was really PO'd that I just made such a large decision on my own. Will not do that again. No, he's not a cheapskate or an ogre, but he rightly felt that we should have gone together, gotten all the info and then signed the papers. I hate to admit that he was right, but he was right. Don't just go off and buy it!

The shortcoming with your approach is that as a compromise nobody gets what they want. At least when one gets what they want it works for that person. I have never felt that compromise works for any long term success between two or more people with competing or different interests.

To the OP, go get the Airstream. If you find your wife absolutely hates it (virtually impossible I would suppose after all it is an Airstream, the RV that makes travel dreams come true) then get her what she wants and you just suck it up as you at least made her happy. It is worth a try.