Well, the ASICS GT-2000 does seem to have cured the issue I was having with the outside of my left foot. Did a 16 mile run yesterday, and no pain there at all. My 4th toe on my left foot is sore, mind you, but then, if you don’t have sore bits after a 16 mile run, you probably got on a bus. So assuming this toe pain disappears in the next day or two, which I think it will because it gets markedly better when it has warmed up a bit, then the move to Brooks was definitely not a good idea for me.
Again, nothing against Brooks Adrenaline GTS shoes at all here; but they were too supportive for my feet, and seems to have caused me the injury.
You live and learn.