I have a Sennheiser PC360 G4ME (Sennheiser G4ME ONE being the facelift version of this set)
I absolutely love them, they are very comfortable and robust ( I did manage to break my set by standing up from the desk and walking away, with the cord wrapped around my leg, and catapulted with a fair amount of force the headset into the wooden floor and obliterated the microphone

but that kinda falls outside normal use) other than that, they survived many trips to i-series LAN events, and even my little nephew bashing them around a fair bit.
I bought a new pair the next day, for me there's no contest in the comfort and sound quality from them.
Personally I love the open air headsets, I can, and do wear them all day, they never get hot or uncomfortable, when no sound is playing you can hear people and talk to people next to you with no issue, and soon as music/sound does play, it blocks most of the sound out.
I'd say either one you choose - you will not be disappointed, just decide if open or closed is the one for you!