I've heard excellent things about the S&B and I plan on getting one soon. This thread is pretty much the reason why I'm gonna go with the S&B:www.club
titan.org/forums/showthread.php?t=13697 (just copy and paste and then take out the space between 'club' and 'titan')
You also can't beat the price either. Granted, you have to oil it...but that's not gonna come around that often. The AEM would be a great choice as well, I admit, but if you don't mind very occasionally cleaning and re-oiling the filter, you should definitely look at the S&B.