I don't have much more to add than what everyone else is saying but if you want input on how good the X is, here is mine.
LOVE IT!
It is pricey, but well worth the price of admission.
It does look wicked but who cares if the cops can't take a joke
It is silent compared to the others I have used.
It is accurate.
I would say to go with the green lazer and not the cheaper red one because of the sunlight.
It is fast to reload for when you have that opportunity for another shot right away.
The CO2 can be used in 2 sizes of tubes. I use the small tubes because that is what I like and when I go out there I don't have dozens of deer to shoot at one time so the smaller tube gives me what I need.
The case that comes with it does a good job of protecting it.
Best overall darting gun I have ever seen period!
And no I don't work for the company