Naw, Windows Explorer is basically useless for productivity. No QuickLook, no spring-loaded folders, can't show directory sizes in list view, for some reason it sorts directories separately from files(?!?) so you can't just type to jump to files, search is still atrocious etc etc. It's just so barren.

No the Finder UI is far superior. The part where it falls down is just in sheer bugginess and performance. And Apple of the past couple years has shown it does not care about fixing bugginess or performance on any of their platforms.