We owned a 2005 Scamp 16' TT until this year & we went a Lance TT. Like all the molded fiberglass trailers (Oliver, Casita, Escape & several others), Scamp's a very durable.
Not living were one gets a lot of snow, I would think anyone with one of the small fiberglass trailers would only need to keep the steel under the trailers cleaned off after using them over "all that salt, chemicals and beet juice" covered roadways.
We have a 23' Lance TT now and are very happy with it.
Never had any warranty work done on the Scamp. It was fairly worry free.
http://www.scamptrailers.com/Escape TT are made & sold in BC, Canada. They are very high end trailers, in others words, made very well.
http://escapetrailer.com/Scamp's come with insulation on the walls & Escape's can be order with it as well. Casita do not, not sure about Oliver.
Lil Snoozy is a new brand with a neat looking product. They are all electric units, however. As are Egg brand.
Lil Snoozy:
http://www.lilsnoozy.com/EggCamper:
http://www.eggcamper.com/Lance:
http://www.lancecamper.com/travel-trailers/