RE: Viper Twin
Varad,
My friend bought a Biper Twin. He got the hop ups with the stall fins, the carbon fiber struts, and the 480 motors. The plane flies great it's really fast and indestructable not like the EPP foam planes this is different foam... he crased this thing going full speed into small tree(1 inch diamter) and broke the tree and hardly put a scratch or dent in his plane. I've flown it and it's really awesome. Go for it!!