Some of those home built conversions are the slickest rigs I have seen

If you ever get bored, check out this guys blog:
http://www.tosimplify.net/ He basically gave up apartments and housing and moved into a Class B, then even went smaller with a Vanagon I believe doing most of the conversions himself. I'm no where near that die hard but some good ideas there for sure.
My favorite RV that I've had in the past was my little 17' Casita. Loved that thing! Wife and I would go camping in it frequently and called it our little fiberglass egg

Towed easily with a half ton truck too.