I enjoy using these while working on my Mac, then having the freedom to move about the room without having an audio cable plugged in. I'd say the best features on Hesh 3 are the battery life, the pillowy soft earphones, the lightweight construction, and the simple design.
I'd say the only downside is loss of connectivity if you connect the headphones to your phone then put it in your pocket. It can be frustrating, but I feel that Bluetooth technology will only continue to improve. The construction did not seem as sturdy upon first glance, but I think that the headband is pretty durable.
Buy these and enjoy!