What do you do when you get where you want to go camping? Fishing, ATVing, hiking, boating? What you like to do has a big influence on what you need for space.
I like the idea of converting a cargo or horse trailer.
Aluminum is very strong and would be harder to break into.
If insulated properly either one could be far better than a typical camper for winter camping.
Headroom is another factor as you mentioned.
I chose a truck camper and planned to refit an old aluminum one but later found a nice 4 season truck camper. It would have been a lot of money to refit the other. I would still like to do that at some point.
There is a lot of satisfaction derived from modifying one or building one from scratch. And also a big time commitment.
Ultimately we all chose what suits us best.
Good luck and keep us posted.
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