If you're looking at those areas I'd suggest this preference:
1. Hawthorn
Option one:
Type: 2b Apartment
Price: High 4's to $500k
Example:
http://www.realestate.com.au/property-apartment-vic-hawthorn-111755147
Reasoning: 10 year moving average for capital growth in units is 7%. 3 year growth is 14.9%. Hawthorn has many growth propellants such as; good private schools, university, diverse economy, strong shopping precincts, great transport.
Option two:
Type: 2 bed Villa unit
Price: $500k
Example:
http://www.realestate.com.au/property-unit-vic-glen+iris-111706883
Reasoning: Villa units in Hawthorn are hard to come buy but offer exceptional potential for future growth. The demographics of the area support an influx in future demand for villas as more baby boomers look to downsize. The best buy will be something close as possible to Glenferrie. Failing this neighbouring suburbs such as Camberwell and Glen Iris have more of this type of stock also at a lower stirke point.
2. South Yarra
Option One:
Type: 1 or 2 bed Apartment
Price $500k
Example:
http://www.realestate.com.au/property-apartment-vic-south+yarra-111997515
Reasoning: South Yarra has a 10 year CG record of 6.5% for units and a 3 year movement of 15.8%. The area has a strong young professional demographic, plenty of lifestyle features and a busy business sector. Couple those features with South Yarra's proximity to the city, botanical gardens and Yarra River the ares will continue to see demand in the future. Medians for 2 beds in the area are in the mid 500's so a 1 bedroom would open you up to better quality properties. Either is a good choice though and if you select a property that ticks all of the boxes you can expect double digit growth over the long term.
Richmond & South Melbourne are still good but the above are better in my opinion.