Update: It's a bit startling, but I realize that if push came to shove, and the Kindle for iPad app got text-to-speech, I might just be able to make do with only the iPad Mini for everything! Virtually. It's perfect for all kinds of reading, and the backlight would be less of an issue if it could read aloud most books.
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Google Nexus 10 Tablet: First Impressions, article.
It seems everybody is as impressed with this one as they were by the Nexus Seven. Boiled down, I'd say that it sounds like hardware-wise, it's as good as the iPad, and the Android interface is improving. And it's cheaper than the iPad, maybe $80 cheaper. (Google is selling it at cost, hoping it'll be a loss leader for future market share.)
The one downfall might be that too few apps are still optimized for tablets and don't utilize the large screen. I'm actually amazed, we've had Android tablets for a couple of years now, what's taking the developers so long? iPad apps came in like an avalanche when it came out.
I was curious about Android tablets for a while, and I have a couple. But I don't know that I'll buy any more, because while they are not bad devices, I'm not as comfortable with them as iOS and iOS apps, and I like iTunes video market better, where I can buy instead of renting (I hate renting since I often don't finish things at once).
I am really comfortable with the two iPad sizes and their features, and with my Kindle Paperwhite for long reading. It will take a killer feature to get me to really want something else.
I actually have the Kindle Fire HD because of such a killer feature: it reads Kindle books aloud for me, and it does a great job, much better than the Kindle 3 (Kindle Keyboard). It's great for when you need to do something else at the same time, walking or working. Or relaxing, I find I can relax much more lying fully down in a near-dark room listening to a book than I can when I need light and to hold a device up, and to focus my eyes and brain on reading and decoding letters.
I saw two young reviewers reviewing the Fire HD on YouTube, and they hopped right past the text-to-speech feature with the comment that it was probably only good for when you didn't know how to pronounce a word... Such a lack of vision!
I really hope good text-to-speech will come to the Kindle app for iPad, and to other iPad apps.