Emma,
For rough off grid life cast iron is the best. I have various Lodge pieces, and my favorite is 13.25" skillet. I use it on gas and on direct fire.
For soups I like my Guisson 5 l and 10 l enameled cast iron.
I also have a lot of Staub enameled cast iron, but I find it too delicate for rustic life, but once I finish my house I will start using them again.
For stainless, for over 20 years I have been using Matfer Burgeaut Excellence series - no gimmics, no rivets, no nooks for grime, no glass, smooth handles that can be perfectly washed. Professional cookware from France - my favorite.
Guison, Matfer and especially Staub do not belong to "not spending fortune" category, so the winner is Lodge, but for soups I recommend at least one enameled cast iron pot.