Been using it for a few weeks now, finally got UEFI installed sorted.
One thing, I give it big thumbs up for is boot is quick, LSI stuff still takes it time (even though you can't see any splash screens)
But the desktop pops up with in seconds, shutdowns are quick.
But it feels more like a Mainstream OS, not a server class OS.
Metro I'm getting used, I think any OS with a new layout bound to have criticism as we all don't like change.
No doubt going to XP from Win98 was a similar progression.
For a brand new OS it last night decided it needed 28 updates