I really regret buying the HD650s as my first audiophile headphone. I hated everything about them in the laid back sound signature, and it made me give up on Sennheiser until I listened to the HD800s. I don't get why the HD650s are recommended so much, they can be good for classical and jazz but I could never enjoy EDM, rock, metal with them for the life of me.
Yep, I agree fully. I just never understood the rave reviews about the senn 600s/650s (I had both for a long time; still have the 650s).
They always sounded like a cloudy, claustrophobic room to me, and they were too tight and clamping to be able to just put them on and forget them.