What do you folks think of aluminum sided trailers?

I personally like my sides trailer. I have a few dings in it from things that jump in the way. The issue with smooth side trailer (fiberglass) is that whatever would ding/dent aluminum sided trailer will crack the side of a fiberglass trailer.

If you really like it I would let the type of construction be the deciding factor!

And FWIW I wax mine at least once a year if not twice. I like to know mine is maintained properly. And getting up close while your waxing lets you find and fix potential issues!