I'm quite happy with AU Netflix - but I don't actually have time to watch a lot of TV. So the ability to watch what I want, when I want is great and I've discovered some new stuff I would never have bothered with (Sense8 is gorgeous). There's nothing I'm missing from the line up - but I'm not a big fan of sit coms that seem to dominate normal TV. As I said I've never been able to commit to watching series on normal TV so I have missed a lot of stuff. YMMV
My kids love it - They haven't turned on the Foxtel box / Cartoon Network since we signed up to Netflix.
There are some doccos on there but I haven't really looked at them. The good thing about it, is that you 'have' to go through a free trial month, so sign up - if you don't like it, cancel it before the month is up. We'll be keeping the service. Note that the basic $8,99 service is SD only - I have no issues streaming on normal ADSL / iinet.
I believe the service will expand over time. there's about 1120 titles in AU vs 7000 in the US. You'll see more stuff coming over when the exclusive rights here lapse. Also new programmes on Netflix are released at the same time worldwide.
I've since downgraded Foxtel to the basics package which still give me Discovery and Nat Geo and Lifestyle which is all we watch really. They told me I couldn't change unless I signed up to a 12month contract. I told them to cancel the service. They moved me to the basic package and no contract.
I won't sign up to Stan as its part owned by Fox. Murdoch's not getting my money twice
TBH I think there's a lot of cross over between them all as there's a lot of providers providing non-exclusive rights to programmes.