You'll find a neat link here for small trailer lovers:
small trailer supportAdding to the manufacturers mentioned above:
Airstream- not sure about the dry bath; iconic, pricey yet holds it's value well.
Alto Safari Condo- Also pricey but has a fantastic resale market when you can even find a used model.
Evergreen- at least 2 lines that would prolly meet most of your criteria:I-Go and Element
AeroLite- saw this on a campground and was given a tour by the owners. Started me on my quest for smaller can be better:B
HTH!
