Of the three Ace Race discs I've thrown, overstable never comes to mind. I guess it isn't like a Comet, because a Comet is a reliable disc. Maybe if you're powering the discs down for 150' Ace Race holes it's "slightly overstable". However, if you get the disc up to it's intended speed, it's an understable fairway driver. The disc has too much glide, and is therefore unpredictable. Another stinker just like last year's Zeppelin.
Wraith/Starfire/Sidewinder/Several Eagles/Gator/Cryztal Meteor/Z-Buzzz/XG Rhyno/Aviar P&A/Soft Anode