I still get the 27 & 28 backwards until I pause to think about it. It's counter-intuitive to me that the smaller machine gets the larger number. It's the same with the 66 & 99 but somehow that's less confusing to me.
It is pretty cool comparing my 28 to my 128 though. I need to put them side-by-side and really look them over and see all that was changed. I love that stuff.