I'll stick with my K&Ns. I have used them for many years on many vehicles and put them in my Explorer when I bought it in 1999. I now have 130k with no problems. I have never had problem one with any vehicles running K&Ns to include my MasterCraft Ski boat. I'll take my personal experience over some abstract tests any day. But each person has to go with what ever keeps them within their comfort factor. I happen to be extremely comfortable with my K&Ns.