The thing I like about CSM is if you hover over (or click on, I can't recall exactly) the ratings for each category they outline why which helps you make your own mind up how flexible you want to be with their recommendation.
Also gives good age ranges, not just the broad certificates.
Android licencing means that no company is allowed to ship both Google Android and non-Google Android. This means that to ship Google Android on the phone they (Amazon) would have to ship Google Android on all Fire tablets too.
In addition under the licence Google apps need to be both installed (you have to have all of them, you can't pick and choose) and placed in particular prominent locations (so the Play Store needs to be on the first home screen). This would almost certainly mean that Google's store(s) would be have as good if not better positions than Amazon's own stores on the device. More than that there are restrictions around app stores which compete with Google play which would, at the very least, restrict Amazon's ability to pre-install and operate their own app store.
Given that Amazon's reason for making these devices in the first place is to sell content - videos, music, books and apps - stock Android is to all intents and purposes a non-starter for them.
Interestingly if you put in the cliche American free market priorities (jobs, income high, safety, work life balance, environment low, everything else in the middle) the US does come out top (as opposed to high but not top on a more even measure).
The same things seems to happen if you put in the sort of priorities other countries are generally believed to hold (so put in the environment, satisfaction, work life balance and so on and the Scandinavian countries leap to the top).
So if there is any truth in the cliches, countries do seem to optimise for what is important to them. Which I guess is what you'd hope happened.
As an aside there doesn't seem to be too much you can do to stop Australia being a great place to live - they don't have a slider for "Deadly animals".
As an Australian the thing that makes Australia a great place to live is the same that makes it suck - distance. It does have California's weather without the risk of earthquakes which is hard to beat :)
Australia also has crocodiles, box jelly fish, sharks, lethal spiders...
I don't think that I'm imagining that Australia has more species of lethal animals than any other country.
EDIT: Just to be clear, I'm not saying Australia isn't a great place to live. I've only been to Melbourne and then only for three weeks but it seemed great. There are just lots of things which can kill you there (though the Australian's have naturally got very good at stopping that happening).
Grizzly bears don't hide in relatively short grass and are very rare and limited to certain areas, and nor does America have spiders that bite your ass when you are trying to poo. Well, we might, but they aren't deadly.
We're using Ember and have been for a couple of years now and it's come a long way in that time. 12 months ago I'd have struggled to recommend it but it's improved significantly.
What I would say is that like most frameworks it makes things easy when you do it the way it wants you to and will fight you like crazy when you don't. The downside with Ember, probably more than most, is the way it wants you to do things isn't always as obvious as it might be. There is a way and you're going to be able to do what you want to do but you're probably going to have to dig a bit and it might not be intuitive.
Short version: expect something of a learning curve.
Switching costs are low but the barriers to entry into the market are massive - Larry and Sergi starting out today wouldn't be able to build a competitive search engine.
The more interesting question (to me at least) is whether search will be as important going forward as it has been for the past 20 years. As more data and activity moves into apps, more stuff is being silo-ed off from Google. Sure apps might be a blip before stuff moves back to the web but if they're not then Google may remain dominant in search but search itself may become a smaller part of the whole.