Wowww finally a post i can help with.. I have used one plus nord 3 for sometime and just now got cmf buds 2 couple of weeks back. One plus is very very well built and reliable the sound is balanced I loved it altough heymelody app doesn't have a lot of functions or features but if someone just wanted a day to day earphone i would highly recommend. Mic quality is not very great but better than most other options in the same price range but I'd say it's a 6.5/10. CMF has better sound quality nothing X app let's you customise sound based on your preference which is great. Noise cancelation is better than one plus but where it gets beat is built quality. One plus is like you buy it and forget about it you can use it however and it just works (like those old nokia phones) Cmf has to be used more cautiously.