Plus you had to watch out for your friends shifting your bike when you are not looking and wasting the air. I loved doing that to one of the mechanics I worked with when he was trying to tune his bike. He would walk away and come back and had to refill the canister to continue tuning his bike.Exactly. At the time it was an incredible product, and blew everything else away. Now the shifting would be about as nice as X0, but with nowhere near the reliability. Lots of small parts, hoses, and limited shifts per canister. Oh, and you'd need a water bottle mount on your DH frame.