Hmmm, there's definately pros and cons staying / working in Australia.

I've been working in Australia for at least 2 years ever since I graduated.
You can say that I'm a few lucky ones that got scouted by an Australian company that based in Perth, hence the company is willing to organize a 457 working visa.
But that was 2 years ago, and even then the process actually took at least 3 months to complete. Not sure how tight the migration process now though.
Oh, note that I'm a geophysicist, which relates to the O&G industry, maybe that helps to speed up the process?

Well, I'm speaking of my personal experience so it will not reflect the general situation in Austalia.

For my company, its all about performance and final outcome. We have a very flexible working hour, you may come in at 9am and leave at 4pm if you want, as long as you finished your work.
You may even come in at 8pm and work till the next morning if that's comfortable with you.
I don't think most of the company in Malaysia allow these flexibility yet. Still adhered to the normal working hour 8-5 mindset.

The tax in Australia is very high though, especially you're an expat that come to earn AUD. The more you earn, the more tax you get.
My tax is close to 24%.

As for career advancement, my company practices the annual performance evaluation, so if you perform well, you'll be rewarded.
Its a fair fight for everyone.

Although I wouldn't deny that there is slight discrimination outside of my work, i.e patroning certain restaurant, shopping at the supermarket, or walking on the street.
I don't particularly disturbed by the occurrence, because some people are just like that.
Most of the time, the people in Australia are very friendly and polite.

Working in Australia, you gain new experience, visiting more places, and not to forget that it boosts your resume as well =)