The official Pro Shop for SCO2021 - DC Discs is Queensland based (so quick shipping) and stocks a great range of plastic you'll want to try.
Local Discs is a Queensland based Disc Golf supplier with a focus on the fantastic Australian and New Zealand made discs coming out right now.
With a huge range of discs of all brands Disc Connection is a great place to start your collection.
Another great place to source some plastic - they compliment their great range of favourites with some more... esoteric and impressive discs.