The first Fury I bought was unbelievably understable. Turned over faster and harder than the Underworld I use, and much more so than the River. I read lots of people talking about how it flies straight and holds an anny line.. Mine had to have a solid hyzer release to not turn into a roller. I thought maybe it was me, but I throw tons of under stable discs really cleanly and they all fly as expected.
So, after I lost it, I replaced it with three more out of curiosity.. A first run Opto, first run GL, and regular GL, all around the weight I'm used to, 170ish. All three fly very straight, with a slight under stable turn late in the flight, and a gentle fade back at the end. I guess the first one I bought was a mold consistency problem. New ones are great, very easy to make hold the turnover line on an anny, and will probably get pretty flippy with some beat in.