My google fu is ok, but I'm having trouble finding direct comparisons of AEM, aFe & Airaid dry replacement drop-in panel filters. I have the Airaid Synthamax, which came with my MIT Jr. kit. However, it appears to only flows 539cfm dirty & 820 cfm new...and that is with a larger filter. That could be a bottleneck on a 6.0. The AEM seems to be the best at flow and filtering. I can't seem to find out much about the aFe. AEM: http://www.aemintakes.com/faq.htm#18 aFe: http://afepower.com/technology_detail.php?tech_id=8 Airaid: http://www.airaid.com/air_filtration_technology.aspx (says for dusty conditions to use their oiled filter) Airaid: http://www.airaidsales.com/article-synthaflow-and-synthamax-explained.aspx bobistheoilguy: http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/3393864/AFe_pro_dry_S_vs_AEM_Dryflow._ The AEM is about half the price of the others. AEM is now owned by K&N. Which is the best dry filter for max filtering, dust capacity & flow? For what it is worth, I ordered the AEM 28-20129 drop in replacement panel off Amazon.