It's to early to tell but I ran 8 in VM and it was pretty awful on a regular PC. It runs pretty much like a tablet would with everything running on launch, nothing closes, just gets cycled out like a phone OS, judging by the task manager. I just hope the ridiculous UI isn't forced on users and it can be easily disabled. I would buy 8 if it has better files system, is more responsive and I can keep the old UI. Otherwise, I'll pass and I imagine lots of people feel the same.