After yesterday I have ridden the Hustle at the cable (in April) and now behind the boat (in July). It's a super fun board that tracks well, is super snappy and lands exceptionally well. The board does have flex in the tip and tail; however, it is tunable. By moving the fins forward or back, you can obviously change the release point off the water/wake and you can actually take some of the flex out of it by switching the top fin mount/bracket from the plastic to the metal which will stiffen the flex pattern and make it a little stiffer, want a little more flex, roll with the plastic fin mount.
All of the boards are super fun and ride a little different. As I mentioned, it just depends what you want to do with it. Here's my personal take:
Standard - Great cable board, good boat board, but a little slow for my tastes behind the boat, perfect for the cable.
RX - Great cable board/good boat board, a little faster than the Standard. Solid all around weapon.
Blueprint - Awesome cable board/I haven't ridden behind the boat. Has the most flex in the entire line in my opinion.
Hustle - Awesome cable board/Awesome boat board. Just the right amount of everything.
For being a first year brand in the marketplace, they have a lot of cool technology and I think in 2012 they will be making some slight changes to improve a few things from 2011 and be bringing some more new stuff to the table.