MrsMushroom I totally agree with the earlier statement that it's each persons individual choice of what makes a great standard of living.
For me Australia would be hell. I love seasonality in a year. I don't want a hot Christmas, slightly less hot and wet summers and I quite like being at the top of the food chain... 
What I love here are the Med like summers - swimming in lakes and open air pools and the properly organized snowy winters (trains still run, runways clear,motorways safe).
I like the fact that I can be at the local airport in 15 minutes, can park right in it, and can be in the UK with family in an hour on an Easyjet flight should anything ever happen.
When dh was offered a job in Australia that was the biggest issue for me taking two days to get home and the cost of a second hand car.
Oh, and our satellite dish picks up UK channels so I get a Sunday Corrie fix if I feel like it!!!
I didn't want to like Switzerland, I never thought I would. The job moved me first and we just thought we'd try it for a few years. Perhaps it's the area we've moved to, the friends we've made and how straightforward life is here that makes it great.
That said, if I get a transfer to the Boston office I'd probably consider it, or Germany,which has really grown on me as a country.