I have two pairs of Lambda Nova Sigs and matching T1 amps. They cost $900 and $1200 for each stat and amp set. Yes, it's tempting to order both of these phones (HD800/PS1000) and compare them to each other and to the Stats, and I hope I'm wrong; but to me, that electrostatic still represents the best sound. I don't care that they are 20 years old.
All of the phones I'm considering are now the same approximate same price (used 02's, PS1000 and HD800); it's the amp that will make it or break it, when it comes to decision time; as that's the part of the equation that is not yet solved.
02's seem to need a ridiculously expensive amp to thrive (unless I can find a 717); the jury's out on the two phones, and if they scale well (as they should); there's another $2-4K. In short, I need to hear these phones with their respective (top-tier) amps:
For the dynamics, the Luxman, the new ALO amp, a Beta 22 and perhaps a Zana or Expereince1. For the stats it's a 717 (which I have never heard) the GES maxed, or something more powerful from Woo, or the A-10 or KGBH ... a waiting game which I do not want to play in this economy. And with two new flagships to build amps for, will these boutique builders put electrostatic amps on the back burner, all very good questions.
I will say that both Grado and Senn have appeared to fixed a lot of things, and most important, comfort seems greatly improved (the one thing I liked about the GS1000 was the comfort ...big step forward for the Grados, and if Senn got rid of their clamp, that too is a major factor.)
Be sure that Stax's R&D/marketing is watching this impending battle between PS1000 and HD800 very closely, as the 02 market share may be impacted. One can only imagine what they have up their sleeves.
If I've said a lot but really said nothing, then what I'm really trying to say is: hurry up and wait.