My thoughts exactly. Some think that ANR is a needless luxury...and there's no way to know whether or not that is true, to be sure. However, I do know that when I have flown with a non-ANR headset I have had to turn the radios up much higher to block out the aircraft noise, accelerating the harm to one's ears.

On the Lightspeeds...yes, they are cheaper. But I've often said that when I wore one I felt like I was wearing the Pope's hat in the cockpit, due to their size. After an hour and a half, my ears and the side of my head hurt...a lot...from the clamping. So, from my experience, their comfort, size, and noise reduction were all lacking in comparison with the Bose X. If you buy the Bose X, you will no doubt be able to borrow someone else's Lightspeed to try for a bit. If you like it, buy one, and sell your Bose for a great price...you wouldn't be out much.

As with all things in life, one has to do what's right for them. If at all possible, try several options, and go with what you deem to be the best.