Be careful when you look at units with a Murphy bed. First of all, you need to know how much room is available (when folded up) for a replacement mattress. You may find that the mattress included is sub par at best and you'll end up addding a topper or replacing the mattress. And, on some trailers, the Murphy style bed takes away a pass through storage area as I saw that first hand on a couple of Jayco trailers.
From what I've seen, I really like those RPods for what they offer in a smaller trailer, and they have quite a few options/accessories available.
Airstream trailers are an interesting product. If $$ is no object, and you like it...I'd suggest looking for one used which would put you in a better position for getting most of your money back if you decide to sell it for a larger trailer.
So, you can see by my comments, I lean heavily towards the RPod. Good luck in your search, and I hope you are on the camping road soon!
