I stopped putting foundation in my hives a while ago (see Frames without foundation). Foundation seems unnecessary to the low intervention bee keeper. Its principal benefit is to make extraction and inspection easier. I outlined in the article how shallow frames can be extracted without wired foundation. Inspection is also much the same. You just have to be slower and more gentle.
We took some honey off our long established Hive (A) over the weekend. It amounted to 12Kg including extracted honey and comb. As always, it tastes fantastic. It's so strong that I can't eat very much.
I use National frames but mostly without foundation. There is evidence that chemicals leach from the wax in foundation and get transported around the hive (NB: I don't have a journal article reference for that claim, so treat with care please). I wanted to avoid that.