I picked None of the Above before I read the opening post.
I have an android phone but will be switching to iOS with my next one, just because I think it actually has more flexibility than what I have now. I've not looked much into the Galaxy SIII (I have the original Galaxy S now) but I have both an iPad 1 and an iPad 3 and I find that their apps are less age dependent than the Android apps. (That is, my phone is only up to Gingerbread and can't be upgraded any further; my original iPad is up to iOS 5, which was the current OS until about a week ago. I got the phone and the iPad right around the same time but the phone has been "old tech" for quite a while now!)
As far as books, for myself I only put money toward epub and mostly from the Sony Store, but I also spend money on Kindle books for my son. I read on both Sony (paid books) and Kindle (free books) ebook readers. I don't read on my tablets or computers.
I have a Windows 7 PC and video game consoles for most of the major platforms (Wii, PS3, XBox 360, DS and 3DS. No Sony Vita.)
I like being multiplatform (something I am going to lose when I upgrade my phone) because no matter what platform something is exclusive to, I can always use it. (Except for some Android apps. I have been considering a 7" Android tablet, but can't really justify it when their core software becomes outdated so quickly, as well as because I have two 10" iOS ones.
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