That was me asking what you're going to use it for.
Honestly, I would hold off on getting it. Run it for awhile under your normal conditions and check the filter periodically. I drive mine in quite a mix of stuff and my filters are OK. If your's seem to get exceptionally dirty then consider the new setup. If I recall correctly, you're supposed to change them every 100 hours or so. The inside filter in particular still looks new after 100 hours.