So how does it sound compared to the PTG? Using some brevity, I'd simply say it's no better, no worse.
We actually did a comparison this past weekend. Actually more people chose the PTG/II over the ART9. To me they sound very close. Who knows, maybe it'll break in a bit more.
The 33EV to PTG/II was a noticeable difference. Way more detail and resolution in the upper frequency range. Funny thing was I paid less for the PTG. The PTG to ART9, not earth shattering.