I would be inclined to invest in the western suburbs as this is underdeveloped and I believe has more potential to flourish and grow. The eastern suburbs have been growing rapidly in the past 10-15 years. Infrastructure has been high in the east (and is still to an extent). Changes in the west is constant as this was classed as poorer suburban areas. these areas are being cleaned up and are looking to be more of a starting point for many people (both buyers and renters). Suburbs such as Brooklyn, Altona, Maidstone and the like are my areas of choice. Also Point Cook, Werribee, Hoppers Crossing also.