I've recently got hold of a 5'6 Amp.
On first look I thought it had too much volume for me and looked more like a board I'd like to surf on. I thought it wouldn't hold speed and would be hard to turn tightly on.
After riding it I'm glad to say I couldn't be more wrong. I absolutely loved it. Turns on a dime, holds a rail through fast bottom turns and doesn't feel like a boat as I expected it to.
Im still very keen to give it a go surfing, but being summer might not happen any time soon.
I really like the rounded nose, I feel it's a lot less likely to snap off getting bounced around in the Shorey.
Id recommend trying to get one for a demo.
(Disclosure: I love Airush gear)