if you absolutely need to bring a lot of "stuff". Delta is charging $100 if your bag is over sized, luggage stores are still selling large bags that exceed 62". Delta is also charging $80 is your bag is between 50-70lbs. The $25 charge for an extra bag is a much better "deal" then paying for an oversized or overweight bag. Delta, and other airlines, are looking to charges for excess baggage as a source of additional revenue. I'd count on bags being measured and weighed. Delta limits the weight of carryon bags to 40 lbs, I'm not sure if that's a new limit. Again I'd assume airlines will start to measure, and weigh, carry on bags.