OK, got my D1 in the mail last night, could have thrown it earlier except I was in a tournament in Boise so by the time I got back it was dark. Did spend a while feeling it up last night and the best way to explain the feel would be like good grippy Champion. It's nothing special, still feels like crap if it's wet, but does have a clingy fartyness that is better than champion, and on par with Opto. The rim also feels nearly exactly like my Destroyers, but the bottom is not as sharp due to the easy release bevel. It just looks like they just took out a quarter millimeter worth of material at a 45 degree angle.
Today the weather was decent, 5-10 mph winds and hovering at 40 degrees. I took out 2 fresh AJ Destroyers, 1 beat in Destroyer, and 2 PDs to throw and compare. The D1 was surprisingly not overstable. It is actually straighter than my Destroyers, with a hair more HSS, and significantly less LSS. The cruising speed of the D1 seems to be much lower as well. When thrown with medium power and flat, the D1 will have a no high speed turn, and starts to gradually hyzer out after about 2/3 of it's flight. The fade is more like a "2" on Innova's scale. I'd say the flight was much more like a PD. When thrown hard and flat, it will turn over for the majority of it's flight with a predictable hook up. It really liked being thrown for flex shots, as there was very little loss of altitude during the turn, and just enough fade to bring it back out (most of the time.) The D1 was also consistently out distancing my Destroyers by 10 to 30 feet depending on the line. Because of the smaller amount of fade and turn, the D1, and I know people are going to hate me for this, resembles not the Eagle-like flight of the Destroyer, but a longer Teebird.
I am actually quite shocked that Prodigy would release their "overstable" disc with this type of flight. It held up ok in the light headwind, but wouldn't a big arm pro need something more able to take power and tourque? Either they'll have to make a "D.5", or the production runs will need to be much beefier.
As for my bag, the Destroyers have something to worry about. A disc that is straighter and has more glide wants it's spot, and I kind of want it there too. I just have to find an overstable one.