I love that you don't have to take the case with you anymore. The sound is incredible. I made it so only the right earpiece functions as a microphone in this way when I run out of battery the left one last about 30 minutes longer than the right allowing me to put the right one in the case to charge and then switch to the left one if I'm an emergency situation and I'm using my headphones all day.
Not having a button on the front it's just one less distraction. I like that I can take him in them in the shower with me when I'm not washing my hair.
Living in the city and being around a lot of different noises when I'm walking on the streets it's really nice being able to enable the noise cancellation when something loud happens like a loud bike or somebody playing annoying music that I don't wanna hear.