Hi amz
I just settled on an IP in Morphett Vale this month. I originally spent weeks looking around Elizabeth, but you can now buy in Morphett Vale for almost the same as what they are asking in Elizabeth, and I think Morphett Vale is a nicer area so attracts slightly better tennants. Having said that there are still some undesirables down south not sure if they are located in certain parts of Morphett Vale just mixed in there, either way as price goes up and rent goes up these people will move futher south so as an IP probably not too much of a concern if holding for the long term.
BTW: South is selling as fast as the North. First open on a house was going for $239,000 so we offered that and it sold that day for $265,000, so you might need to be prepared to offer above advertised price just the way it is in Adelaide at the moment.
Dont have the crystal ball for capital growth, but hold for the long term dont think you can go wrong.
Good luck with you house hunting
Ian