I have a friend who has the H20-10, and he also likes it very much.
I have heard the H20-10 criticized as being vulnerable to loosing its shape over the long-term due to the plastic construction, but that wouldn't worry me too much; I doubt that DC would make something that wouldn't hold up for many years, plastic frame or not.
I understand that the NRR is very slightly less than the H10-13.4 (22 vice 23); probably not enough to make a difference, but the H10-13.4 is not exactly a world-beater when it comes to noise reduction, so personally I would not be keen to go below it in performance, even for slightly increased comfort.
Thanks for the input SATCO; enjoy your new headset.
