I would only buy down if I never, ever wanted to breathe again.
Want to know what I got for Christmas? A pinched nerve in my back! I spent 3 days doing my best Tim Conway/oldest man routine which included a trek through O'Hare. At one point I stopped to lay down on a bench and it took me 10 minutes to figure out how to get back up. I knew walking like that was going to stress the muscles in my back but I had no idea how sore my hips would be. Ouch. At least the nerve pain is mostly gone. I watched today's matinee standing up in the cry booth so that I wouldn't end up bent over again from sitting too long. I'm hoping the muscles recover fairly quickly because Jan 1 will be my only day off for a while.