Since you like the PS1's smooth, bass heavy flavor so much, why stray from it? I'd get something similar but different - like an L3000
The L3000 fits your requirements nicely but for one - it's darker than the HD650.
I'm in a similar situation - the L3000 is clearly my reference headphone, but I'd like something different once in a while. The RS1 is failing in that job; too harsh, aggressive, and unrefined even with flat pads (perhaps it will be better once the Melos arrives). Have heard the Omega II + KGSS, that headphone just can't get rock right (the SLAM is MIA). Heard the CD3000, and it's nice but not anything special when you're coming from cans at the level of the L3000/PS1. It's hard to be satisfied when you're used to the good stuff. Same with the SA5000 (heard that one - sort of), and it's too damn dry sounding anyways. Also own the HD600, K340, and HF1, those cans also aren't quite at a high enough level to satisfy. In the past I've owned the HD650, K1000, RS2, and HP2. The HP2 is the only one I miss. With flats (the way it should be used) it's got a fatigue free, almost slightly dark sound (but otherwise very neutral). One of the most grain-free headphones I've ever heard, including electrostats. It's got a very tight, snappy sound to it - like the John Grados try to do - except that the HP1000 gets it right. It gives a real weight and palpability to notes. Shouldn't have sold my first pair; I recently paid much more for my 2nd (soon to arrive) pair. I'd also love to nab the PS1 (haven't heard yet but sounds like it's up my alley) for a 2nd top headphone, but they're pretty hard to find these days.
In short, I'd recommend the HP1000 or L3000
Edit: I suppose the other high-end ATs may be worth looking into to. I don't feel the w10vtg is going to be at the level you (I'd) want. The w11jpn may be interesting; I haven't heard it yet (but will soon). The w2002 is awesome for pure vocals and acoustic, but amp matching is hard and it's pretty useless for pop/rock. The w5000 is a pretty polarizing headphone but possibly worth a shot. The hp1000 and l3000 are more of a general purpose, sound good with any album kinda headphones than the w10vtg, w2002, and w5000 IMO.