No wonder that you were undwhelmed by the Ulti when being a Stax creature. Stax is all about resolution and fidelity, whereas the whole Gradessandro bunch only does work-to-rule in that respect. In fact, I wouldn't say the Ulti's resolution is noticeably superior to HD600 or so. You get a MS1K or an Ulti when you want fun and tiptoeing. The Ulti is tiptoeing with the best SQ available IMO. But when SQ is your only concern, conventional HPs will serve you better.
Haven't been here for MONTHS. My Ultis still alive...just so...I had a cable damage close to the systems, so I had to grub them out of the wood without destroying anything. It worked, but they look a bit rugged since then ^^
I thiink you mean toe-tapping. However, while I didn't get that with the MS-Pro, I put the distancers and G-cushions on my MS-1 and I liked that a lot more. So, I'll keep the MS-1000 and sell the MS-Pro.
Also, I'm not a 'Stax Creature' (that sounds a bit like Godzilla with square headphones on), as I do most of my listening on the ZennJazzGrado
The resolution of the PX 100 II can't hold a candle to the Stax, but it's light and easily protable and can be pwered by my iPad without an external headphone amp.