I've been reading brulosophy a lot recently and I'm amazed they've not done a BIAB (brew in a bag) vs mash tun test.
It seems to me there's still a question over whether BIAB can ever fully achieve the wonders of a full mash tun system. But i've never read anywhere where someone has compared side by side?
Also; Given the grainfather and Braumeister are effectively BIAB, it seems to me any issues are resolved these days. (I've never heard bad things about those two systems!?)