Been holding off on upgrading my wife's phone and my iPad. I don't see a single improvement in iOS 6 that's worth it, in exchange for the loss of native Google search/maps. The Apple is losing it's shine, IMHO.
BTW -- I've been playing around with Windows 8 Pro on a Samsung ATIV Smart PC Pro 700T and a Microsoft Surface running Windows RT. The Samsung is my new "traveling PC" and it has Coastal Explorer installed. Windows RT -- nice but I'd rather have an iPad. Windows Pro is "tablet Nirvana" -- add a detachable keyboard/mouse and bluetooth GPS and it's "where it's at" for the ultimate portable experience, IMHO. Add a USB docking station with external keyboard/23" monitor/mouse and it can be your only computer.
http://www.nstsystems.com/blog/itemlist/category/6-technology.html