Shocker or Impulse? Which gun should I get?

[OneArmedScissor]

i'm stuck between these two guns. I'm really not sure which one to get, ect.
which one will run off of CO2 better?
which one will run off of N2/HPA better?
which one is easier to maintain?
give me reasons why to buy which gun, ect.

thanks


i usually play woods, scenario games, and some small tourneys.

[Impy4335]

on co2, they both run the same, with the shocker eating tons too much. both have co2 filters
hpa- shocker will eat anything too quick except a 114/45, here get Impulse
maintennence(sp): shocker has 2 'noids, and 4 bolts on the solenoid tray, making it harder to clean and take apart. It also has no vert adaptor, as it only has the two solenoid tubes for air lines (is that correc, or am I wrong?).
I like my Impy shocker has to use special battery, Impy runs on 9 volt. unless new gun, only Impy is vert feed. Impy is lighter