You're definitely going to want the de-ionizing cartridge. They are pretty freaking awesome - I had access to one for several years when my buddy lived in the adjacent neighborhood. Now that he's moved away, I regret that I didn't wash my car at his place more often. Since then I've graduated from a cheap leaf blower to MetroVac products.
__________________
2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed | |