04/12 Indices, page-162

Here's some information for you.

Correlations between various ETFs which (more or less) track the XJO: I've also 3-year returns (% p.a.) for some of the ETFs

STW = 0.98 (3 Yr return 10.8%)
IOZ = 0.93. (3 YR return 10.7%)
VAS = 0.98 (3 YR return 11.2%)
A200 = 0.98
GEAR = 0.95 (Gear, as its name implies, is a geared ETF, gearing is 50-65% on any given day.
VHY = 0.93
VLC = 0.94 (3 YR return 12.6%)
QOZ = 0.86

Vanguard ETFs tend to have the lowest fees of any of the issuing authorities.

This site compares most of the ETFs in the above list. (click on site).