Aluminum vs Wood Construction?

You really have to look at more than just alum vs. wood as I would say aluminum is superior to wood in almost all instances. However, when you say stick and tin vs. aluminum and fiberglass it is a different animal. Aluminum and fiberglass imho is much nicer looking, and is usually lighter and easier to maintain. The aluminum also will not rot like wood can. The problem with fiberglass is delamination. The cost of wall repairs with a fiberglass trailer are insane $4k-$10k in some instances. Where taking off the tin sheeting seems fairly easy and much cheaper.