I have a bone stock 07 charger srt8 6.1 hemi. I was wondering if its better to stick with the stock laser platinum plugs which cost more than the iridium plugs or go with the iridium plugs and of course NGK. I just pulled out a Autolite plug from it which it was iridium but I'm not big fan of Autolite plugs at all. I would appreciate your advice. Thanks