I mean unless your debating like which drummer or guitarist has the better technique, or who's faster or more technical, isn't it kind of meaningless to aruge whats the better band since thats just based on personal opinion or taste? What if I like Metallica's Load - St. Anger phase? (I dont), what if I think Led Zeppelin was overrated and a waste of time? (I certainly do not), what if I think Green Day are the greatest song writers and composers in the history of mankind? (HELL NO). How can you validly criticize someone's personal preferences and act like your the one who's right?