Je ne sais Quoi
I've fallen equally between Android and iOS over the years. My dads Galaxy Tab 7.7 with AMOLED screen is very nice indeed. I started out with an Android tablet. But quite simply, beauty is more than skin deep here.
I've come to realise after switching between the two that there's something about the whole iPad+iOS package that gels intangibly, and makes it a pleasure to use day in day out. Androids always seem to be straining to get that completeness.
I was intending to get a Nexus 7 after my iPad2, but after fondling an iPad Mini in the Apple Store, it was love! The weight, the build, the feel, the tactility...I didn't expect it to have that impact. I'm aware that I still need to hold a Nexus as it may well have the same effect, but I'm just saying not to damn the Mini until you've tried one. I'm still open to Android but basically you either embed yourself in Android Apps or Apple apps, and I've built up more of the latter.
P.S. one thing I DESPISE about iOS : Slide to Open. When my tablet is at home I don't want to have to unlock it! (Android could probably disable this).