With that said I'm still completely addicted to having a full OS in my hands. I now realize just how much I was settling in the 3 years I've had ipads. I'd say the inconvenience of windows and its foibles are MUCH much less than the inconvenience of iOS, browsing to a site and not being able to view it or it's content/video because of flash, not having any true pen input, not being able to install my windows programs but being forced to purchase heavily watered down versions, etc etc. I'm never going back even if you put a gun to my head. Plus it's not like my ipad3 was perfect either, it would occasionally freeze and need a hard boot, although it was more like once a week than 3-4 times per day, it loaded up graphics heavy web pages PITIFULLY slowly, at times failing to even load the entire page, or it would only load what was on screen and as I scrolled down it would once again begin loading, making me sit there for 30 seconds while it downloaded 3 graphics.
I am tempted by the Surface, but at this point I have too many apps and too much integration that is handled very well by the iPad. I may see if I can wrangle a Surface Pro through work at some point, and I'm very excited to see where this platform is in another two years or so.