was looking at NAPA, ac delco, fram and purolator filters. which one deps everyone think fitlers the best, and which ones to stay wawy from? ive been using fram triad technology fitlers for 6 months now, and still looks rather clean with the regular filter, it owuld have had at least something on it by now! theirs a NAPA near me,t hink their fitlers are better than fram? ive been told ac delco and purolator air fitlers are very good though. what do you think?