I had one and loved it. Very easy to ise too. Most GP's don't fit them anymore so going to a women's hospital with a sexual health clinic or family planning in your state is the best option. The manufacturer recently stopped making the 12 sizes that were previously available and now only makes 4, so for me, the size I need is no longer available.
The spermicide isn't available in Australia but is available in New Zealand so if you know anyone in nz they could post it to you.