Aussies don’t drink Yellow Tail. It is an export wine produced primarily for the US and UK markets, although a lot of Australian shiraz in the lower price range is made in a similar style … big ripe up-front fruit and raspberry cordial flavours.
If you want to try serious Aussie shiraz avoid anything that lists the region as ‘South Eastern Australia’. That’s a vast area that covers almost all the wine growing areas outside of Margaret River in WA.
You might like to try some cooler climate shiraz from the following regions of Victoria: Bendigo, Grampians, Great Western, Heathcote. Look for something from Seppelts like their Chalamber Shiraz or St Peters Shiraz.