Well I rarely come to this page but saw your post.
Im in Perth and have a ZT and a Rover 75. Love the cars to bits.
Value for money,nothing comes close to it.
Both cars are not particularly fast off the mark but do have long legs on the open road.
Comfort,cant beat the Rover,for handling the ZT is great.
I regularly drive 600km trips in them and never had an issue,that said you need to keep on top of anything that starts to be an issue.
Running costs are pretty good if you know where to buy parts,main issue is the cooling systems but if you decide your going to keep the car for a while there are a couple of things you can do to make the car bullet proof.
Pretty much like any other car really but better built.