Well, if you want to save that cash for something else, get Anti-Siphon on your co2 tank. Ask your local proshop to put on Anti-siphon onto your co2 tank. It'll run about 15$ instead of 50$ for an X chamber.
And ya, get an anti-siphon tube installed in your Co2 tank. It's a tube installed inside your Co2 tank that is bent upwards so that only the gas form of Co2 is sent through the valve, and into your marker.