So now I have to chime in, lol. The best plugs are usually the ones that came with the car from the factory. That being said, Champions are crap, period. NGK are overpriced. Denso are really good parts. (Toyota almost exclusively uses Denso, enough said). I've been using Autolites lately and have no complaints about these either. But again, whatever came with the car will probably be the best bet. I put Autolite single platinums in and love them so far. Idle smoothed out a lot.