Okay, interesting one.
As an enthusiast, being told "the greatest coaster" or "Alton's next thrill ride" it's a big disappointment. It just doesn't tick the boxes for that at all. Note, this is for an enthusiast, but we're a hardened bunch who need a LOT to thrill us.
Also, in terms of going the extra mile to make it brilliant using effects - it also doesn't really satisfy. The theming is good, don't get me wrong, but it doesn't have the extra effects to really envelop you in the story and theme. It's a bit "flat".
So, the ride itself? It's a good enough, fun enough little family coaster run through the woods. It's a bit like Troublesome Trucks at Drayton, so good fun.
The height limit too is just right. It's a family coaster and I'm happy with that too. The indoor section was a bit broken on our first run, but apparently on subsequent runs was better. The indoor theming was not so great without decent effects.
The backwards section I actually really enjoyed. I found it just really great fun.
So, if Alton had said to me "here is one of the best family rides for a decade" - I'd say "spot on".
Here's the big but!
The public loved it. The less hardened riders screamed, shrieked, cried and laughed their way off the ride. So while there was certainly disappointment from the way it had been "sold" to enthusiasts, it's not a failure by a long shot.
One to watch.
As a family replacement to Corkscrew, I personally think it's brilliant. It's much, much better than Corkscrew was.
Oh, I also loved the "Japanese horror" style station - very creepy.
In order of rides I enjoy at Alton? It's below Nemesis and Oblivion, above air and Rita, so in the middle, above RMT and Spinball. So third best coaster for me in the park - but not as a thrill ride.