Ah...Senn vs. Grado debates. Back to the roots of the community!

The HD650s or 600s for that matter, with the zu moebius cable paired with a Headroom Max was some of the best sounds I have ever ever heard. If I had to own such a system, I could easily forget about upgrading ever again. But that sound is different from what Grados offer so thankfully there are options and one can go either way. My main problem is that I have never found Senns to be comfortable, with that clamping vice they call a headband. Since I have never owned a pair, I have never felt comfortable enough bending the phones that were on loan to me. Since I have other headphones, I thus was never really motivated to go after them. However, if I had some money to burn, I would play with the HD650s and pair them with a Headroom Max (new one now I guess, that balanced monstrocity that replaced the old Blockhead). Seems to be an ultimate mating.
As for value, everyone is going to have their own opinions. If one reads through Tyll's site, one will note they love the SR60's and for a long time, they were one of their most beloved and well promoted phones. Despite him not personally enjoying Grados compared with Senns, he is not totally biased against them. He also likes the 225's.
For others, value will always be subjective yet how many think the $18k price tag for the Big O, or even just the original 8-9k askiing price for the HE90's was a bit outrageous? Talk about diminishing returns! Yet...once heard, so many claim it to be the bestest thing since breathing fresh air. Maybe even better than that! Again, if I had the money, I would own the full on Big O and then experiment with the various electrostat amps recently released. But to be sure, I would own a piece of Headphone history in its entirety - the Orpheus. Sure I can get sound that is perhaps on par for much much less, but there is something about that system

I want to hear one.