Ok, i know there are probably a milllion posts about spark plugs. But i cant get the darn search feature to work. And i dont want to sift through all the posts. I just wanted to know what plugs you guys think are the best. I've herd NKG, but which type? Also, what plugs should i avoid? There the ones with the 2 tips. BTW, they suck. Just wanted to hear from experience before i replace them.