I know this is a loaded question, as everyone has differing opinions. I am getting ready to change out the plugs on my fuel-injected 385, and I see on the sticker the factory calls for AC Delco FR5LS. I like AC plugs, but I have been running Bosch Platinum in my Vette for years, with only one plug failure. I have read good reports about NGK in many applications. It's a BIG world, with MANY opinions. I thought I would check you everyone and their experiences on the Boss. My AC plugs have been fine, as I am now at 13,500 miles, but as most know, the 385 fuel-injected equipped bikes run a little rich sometimes. I sometimes have to clear it out in traffic... What are you guys recommendations?