I have replaced spark plugs on my 2006 Mustang, and 3 of them broke, so I know how the 4.6 3v nightmare goes. I'm about to change the plugs in my 2007 Mustang GT, but I'm stuck between Brisk and Champion. They're both one piece plugs, but I keep hearing that the Brisk is designed for racing and won't last as long or perform as well as Champion for highway and daily driving. No Autolite, no Motorcraft, no other 2-piece plugs. Any input on the Brisk or Champion choice is greatly appreciated.