While there are more smaller units in the market now than years back such as some the Intech and T@B designs, my sense is that the fiberglass units like Escape and Casita are still the preferred choice, although even they have there limitations. While I understand some of the tradeoffs builders face when designing small trailers, it does fascinate me that bed size is often sacrificed so they can load other amenities inside. To me, the bed is one of the most important features. Even Airstream still puts 48" wide beds in some of their smaller units while, IMO, wasting space on a dry bath in a camping trailer.