I read a similar book a few years ago, and it was basically stories from NZ, AUS, Canada and the UK, and it did not have much to say except that weather was ***, this was bad, that was nuts, etc etc. I took it with a pinch of salt.
To me, the most important thing to think about, which you do not need a book for, is Will my family be safe living here and have good opportunities.
Not, how is the weather there ? Well, it can be just as wonderful as in SA, and just as *** as in SA. But, I can sleep with my doors open, the DVD's are in their boxes where we live because there is honesty, and honesty is expected, and we have such freedom. I won't even weigh up the odds between freedom and peace of mind and weather or money. If you do, well ......