As a flight instructor for more than 3 years in the USA, and having the oppurtunity to fly in the Philippines for my ATO conversion, I would have to say that the USA offers the most cost effective way to time build.
In my part of the USA, locally in Texas we can offer a glass cockpit C172SP with Air con for about 120 USD wet. That is a 2007 model not to mention.
In the Philippines and for a vast majority of the world, they are comparativley more expensive. Many foreigners have come to me and say "wow! i can't believe the USA is this liberal when it comes to flying. I wish I could fly here."
I have been told the CAA in the UK is short for Campaign Against Aviation.