What do you folks think of aluminum sided trailers?

I've never waxed my 2004 wood framed, aluminum trailer either. It has lived outside 24/7 since new, and has snow on top of it now. It's never leaked and has been easy to keep warm or cool. I think sound travels right straight through them. You can hear pretty much everything through the walls.

If you're buying a trailer, you better plan on doing maintenance annually at least to prevent those evil leaks that are constantly talked about.