We have Au unity couples cover atm... I think we pay just under $200 / month (covered for everything except obstetrics), witch is alot, but they have good optical and dental with no gap and are awesome to deal with and claim thru.
as we are getting closer and closer to TTC, we have been looking into upgrading to obstetrics.. but I have now decided not to.
I'm going to go public and I'm very happy with the decision! By the time you put together ALL the extra expenses you have to pay on top of you private cover every month, it's ridiculous! Spec. when you think about that you dont really have to pay anything at all with public - of you get share care and all that! FH is still not convinced.. but I am.. so I get to decide..
2 moths before you bub is due to be born (whenever we'll get there) we'll change over to familiy cover with Au unity.
With that said.. It's good putting some time looking into it. Both private and public, talk to people with experience and compare different private health insurances!