Has anyone tried one of the CO2 systems with their air tools? I'm trying really hard to hold off buying one until I hear they're really as handy as they seem to me. My compressor is a pain to lug around, not to mention the noise. Lowes carries one brand, whose name excapes me right now. The JacPac can be had for $99 and it includes one (unfilled) 9oz canister. The kit at Lowes doesn't include a canister and is $89. Thanks!