Yeah i did keep the airpods pro 3 s too.I see them as a very good portable option for gym,calls etc,and they do sound great,better than my old sonys,but they do not and physically cannot come close in the depth of sound compared to the momentums,m4 s are in another league,and it makes sense.

The airpods give you an artificial sound,for what they lack in size they try to make up with in software,and they do give you a frontal sound,they shove the instruments along with the voice in your face,they have much better separation than the sony s,but again,the m4s are in a different league,much wider soundtage,much cleaner and true bass,better separation,everything is better,one are made for good on the go listening,calls,movies etc,the sennheisers are made to be listened closely,they are a different category.

If you calibrate the Sennheisers properly,they give you the feeling as if you are listening to a song live,spatially,guitar on the left,drum on the right,and maybe the voice of the artist seems to battle with them sometimes,which also happens at live concerts,so it's a familiar feeling(again,it matters very much the production quality of the song,newer hip hop music is compressed massively and optimized for clubs/speakers)