That was the first one that switched back, I think. Personally, I prefer that design to the full-height left/right and half-height up/down keys, because it's just easier for me to find the right arrows that way. (I'd prefer full height on all of them, but I recognize a laptop keyboard is space-constrained, at least if it's 13" or below. The 16" MBP has less excuse.)
I don't really care so much about half-height left and right keys versus full-height ones, but I've discovered that what I really hate is when half-height PgUp and PgDn keys are on either side of a half-height Up arrow key. This means I constantly hit PgUp/PgDn with my pinkie when reaching for Left or Right (and ultimately on my current machine I had to override this with a keyboard remap).
