My first headset was H10-60's. I used them all the way to CPL and can't say a bad word about them. Then, I decided to try some ANR headsets.
First I got some Lightspeed 20k's, they were OK, but nothing special. Very bulky!
I sold them and bought the Lightspeed QFR XC's. They hardly worked and the ear seals are very hard.
So I finally decided to get the Bose X, and they are BY FAR the best headset (and most expensive
).
Extremely comfortable, great ANR, great battery life, great headset!
I kept my H10-60's as a backup and will never get rid of them.