I'm very happy with it and it's a much better fit for my paddling style compared to the Mystic. The mystic is a wonderful boat with a well deserved reputation, but it's slightly too small for me when loaded down with gear. The mystic held lines superbly and could turn on a dime
Picking the Super Hero up near the end of the season, it was a big improvement for ny runs. It's extremely stable, quick to respond, very predictable. Having a little more edge makes it really easy to adapt to from a playboat (my playboat is a Super Star, so having identical outfitting is a nice bonus). Boofs very easily and resurfaces super quick.
How does it roll? Don't know... Shouldn't be terrible, but the water's cold enough that I don't have motivation to try on purpose.
Plus, it's comfy for long days on the river and very quick to jump into and do up the backband. There's enough space for real footwear too. Loaded with gear, it's pretty well balanced.
If you're interested in it, I highly recommend it. The Burn is also one to compare it with, but I like the Jackson outfitting more.