Aldinga Beach is really nice area, some new developments going up, parks and playgrounds for the kids and beautiful beaches.
It is really hard for an opinion as what others may like you may not.
It is 7-10 minutes away from Seaford where the trainline extension is, and the beginning of the expressway.
you can get a lot for your money when buying compared to other suburbs around the area.
I know people that have bought then sold within a couple of years to move closer to Seaford area, BUT I know people that have sold in Moana to move to Aldinga and absolutely love it.
My advice is to do a fact finding mission on arrival.