Am I the only one on this board who does not think it is worth paying $180 to "upgrade" to Stretch Seating for an admittedly "not tall" adult and 2 kids? The kids aren't going to know that they have 5" of extra leg room, and they aren't going to get the benefit of an adult beverage. If you want to spring for the DirectTV, pay $6 when you are on board and save the seats in front for the vertically challenged (tall) people!
Of course I also don't see the benefit of paying $100+ to go through an expedited security line. If you wouldn't otherwise offer people in the security line $100 to cut in front of them if you knew there would be no repercussions with others waiting in line, why would you pay an airline to do the same?