I wonder how many people are informing their opinions solely from the gross incompetence exhibited by Apple with your mentioned double tapping keys issue. I seem to recall that they have fixed it in newer models, but I wouldn't be surprised if it still persists.

I hate to admit it since I've drunk the mechanical keyboard koolaid, but I like the mbp flat keyboard. I easily prefer it to the 2015 keyboard, which imo is really nothing special (at least it doesn't gunk up). I hear people say great things about the thinkpad keyboard, but from my little experience with it, I'd still rank the mbp flat keyboard higher.