Action camcorder Contour vs ION vs GoPro

[IC3]

I did a small research on the action camcorders, wondering which one would be best price/performance range for filming while riding a motorcycle.

These are the deals I found...

ION Air Pro - £122 inc. delivery

Contour Roam2 £134.99

GoPro Hero 3 Black £239

Which one would be best for amateur videos to post on YouTube?

Videos

EDIT:
It seems to me like the ION is the winner as it has the most accessories with lower price and impressive video quality. But I want to hear your experiance and views about these camcorders

 

[IC3]

Where did you find the go pro for that price ?

On popular auction site ...bay. You get what's on the picture for that price...

@famas, this camcorder costs more then the GoPro Hero 3 Black. I was hoping to buy something for no more then 200 pounds...
Now there's a newer model ION Air Pro 2