I'd say it is well worth the money especially since it isn't very expensive to start. I shot the gun and liked how it felt. I wasn't crazy about how loose the forestock is but it was fast to pump and they may be connected.
The advantage of the supernova over the standard nova is the ability to change out stock configs, which allowed Benelli to put comfort-tech on the supernova. The recoil reduction of comfort-tech is worth the price of the supernova if you intend to shoot a lot of 3.5" shells.
A friend of mine has a nova he thinks is the best thing since sliced bread. Anyway, he and one of his friends went duck hunting this past winter. His friend had an 870. Well his friends 870 ended up freezeing tight. He couldn't shoot a thing. My buddy kept shooting till he had his limit then handed it to his friend so he could his limit.
Try to put your tree stand in a tree with plenty of background cover, keep the prevailing winds for that time of the year to your face, and take care of those pesky squeaks and creaks your stand may have developed while sitting in the shed. A good treestand lube can be made by heating petroleum jelly until it reaches a liquid form. Some hunters have reported success by including a cover scent in this mixture before applying it to their stands.