Hi
Personally I would go for ACCA, but that could be me being
biased.
Persumably you don't have an accounting degree, so the best
approach is to take a part-time or distance learning degree in the
subject, and apply for exemptions upon graduation. I
personally think this is the most effective way in approaching it,
which gives you 2 qualifications within similar time frame.
Do some research online and find the course that gives you
the most exemptions.
One final point, ACCA is not as widely recognised in the world
as one hopes. There are lots of other accounting bodies which
can give you a better competitive advantage (due to mutual
recognition) in long term, such as the Australian CPA. This
may or may not be relevant depending on how (which sector) and
where you want to progress with you career.
Hope this helps.