I was in JB Hifi the other day and saw they had the Sony Tablet S for $554 plus a free $100 PSN voucher which makes the tablet S for $454. You can sell the PSN voucher on ebay or possible back to the store if you don't need it. Not sure if this is a Sony's promotion or specific to JB Hifi and how long it would go for though.
The Sony Tablet S won the CES award for Best of Innovations Design And Engineering Honors for Tablets, e-readers and netbook category by Consumer Electronics Association for 2011-2012 and based on the CES website, judging was based on engineering and build quality:
"Entries for The Best of Innovations are judged on overall engineering qualities related to technical specifications and materials, aesthetics and design qualities, the product’s intended use and function, unique features and how the design and innovation of the product compares to others in the marketplace"
wat is PSN voucher?