Welcome to Summit-Fi headphones... the Ether C Flow are a dandy pair of cans. I enjoy listening to all the
subtle differences between my Magni, Vali, Valhalla, and Asgard 2. And hopefully soon... a Heretic and a Lyr 3 (or is it 2? Meh). Those Ether C's fit on my melon for hours at a time.
And like Ty used to say, they have a ugly carrying case.
Re: HD650. In my case, the HD6XX clone.
I never regretted that purchase. I picked them up right after my first pair of "good" 'or "reference" (
AKA, model used in recording studios by my aquaintances) phones... my Sony MDR7510. Other than having to replace a flakey MASSDROP cable (covered by DROP's waranty... so no complaints), I enjoy THAT Senheisser sound and fit.