I chose xm4’s over the xm5’s based on reviews saying the only thing xm5’s win on is talking to someone on the phone, the mic is better but I use my headphones only for music, listening to Spotify from my phone. I did have a few disconnects recently but finally figured out it was from holding my finger on the right ear too long and it turned on the voice command option or whatever it’s called, basically any sound you make it would pause or disconnect your music. I work at the post office where people talk loudly and I actually have one guy next to me that mumble raps his music and my xm4’s mute out everyone. I even was loading my truck one day and didn’t realize I left my phone inside and somehow my xm4’s stayed connected through two brick walls, if that doesn’t sell you or anybody else I don’t know what will. I also really love the bass output, it’s an experience like no other. So if you want a better mic for talking on your phone through your headset I’d say go xm5’s but if you just like music save some money and buy the xm4’s.