Then I'll wait until at least Jan, 2016. Should give the unpaid beta testers early adopters time to help Microsoft work out the bugs.
Every time I upgrade to a new version of Windows, I virtualize my old system and keep that around on the new one. That way if something horribly breaks in the new version of Windows, I can usually still run my old system, even if I have to level the PC and reload Windows itself.
Its a bit of a sledgehammer, but its impractical for me to be without a functioning computer for too long (I do also have a laptop, but that's not quite the same). Actually, I'm going to be moving from sledgehammer to bunker-buster for Windows 10: I'm going to take my Win7 PC and virtualize it, then upload it to my corporate private cloud, add the Horizon direct connect plugin to it, and have a copy of my original system available whenever I want to reference it.
On the one hand, that's crazy with a capital "CRAZY." On the other hand, I built the damn infrastructure, so screw it I'm gonna use it.