I like my ion but im gettin sick of using nitro. I have anti-siphon c02 tanks which the ion also hates but since im not much of an airball/tourny player, should i sell my upped ion and get a custom pro-e with upps. I would have enough money from the ion to get a wicked bolt, barrel, trigger, other stuff. I would sell my nitro tank with the ion too b/c thats the main problem is drving 20 min away to full up the nitro. I have a 50 gall. c02 tank in my basement and i think thats a waste if i use c02. I play alot while its fairly muddy and im too scared too play with the ion b/c i know its not the rugged woodsball type. Does the custom pro-e work well with c02(anti-siphon)? What should i do???????