A local shop called WYSIWYG in Manhattan , IL. had the Prometheus when I stopped in the other day. They have a large field out back and allow you to test out used discs and they have a few new demo discs.
The Prometheus' they had for sale and demo are like a Blizzard or Opto Air style plastic , and the demo unit I tried out was 168g.
I only tried a few throws with it, and never felt like I had a good launch. I typically have trouble throwing wide rimmed discs, so I knew this wouldn't be any different. That said, I could throw it much further than I can throw a Destroyer or a Groove , RHBH.
If you can handle a wide rimmed high speed disc, I would think the Prometheus might be worth looking into .
I ended up buying a used Flick 2.5 to use for RHFH drives.
Prometheus is not for me at this point.
DX Birdie 175g, Opto Pure 170g. Champ Cobra 165g, Star Mako 162g, Champ TL 168g, Medium Trak 157g, VIP Sword 175g, Medium Lace 163g, RHBH , RHFH , RHOH/Tomahawk