We have been here for just 8 weeks and have a 12 month rental in Glenelg. It is a perfect location next to the beach and always something going on within walking distance. We may not end up living here long-term (a costly suburb to buy in!) but for our first year of settling in and getting out and about everyday (on foot or tram into the CBD) and meeting people, it is perfect for us. My OH has been at work with the car each day and yet I don't feel stranded in the house (Hallett Cove people may say the same but when we visited, there wasn't that much going on) and I can easily walk to the supermarkets, shops, cafes, sandy beach, library, schools etc.
Good luck....it's always a difficult decision to make and I'm not looking forward to making the decision again when our lease is up early next year!!