Aluminum vs Stainless Steel Cookware

[Ofer]

First post, hope for many more great site thanks for the info!!

I am planing for long term cruising in a small power boat. Weight is a big consideration for me so I try to be as light as possible.

Is stainless cookware much better than alum? Alum is much lighter and I would rather use it.

Also what about Teflon? should I have Teflon on everything or just on a pan or two? always trying to keep it as simple as possible and have it last.