I'm guessing it's one of the new ones in the center (between G and H).
I only use escape in vim though, and there I mapped the jk key combination to escape instead. (:map! jk <esc>) I'm trying to stop using the physical escape key completely. If it's not where I expect it that will go faster.
The function keys do almost nothing in Linux so I won't miss them.
My main regret with my Advantage keyboard is that I should have bought it 20 years earlier. So I could totally see myself getting this. Even if I think 3.2 pounds is a little on the heavy side.
