I was really excited to try an overmold from Trilogy that had a little stability. So when I got the Zion I compared it to a pretty good lineup of other discs. All the discs were molds that could potentially fill the same slot in my bag: Fortress, Culverin, XXX, Spark, Longbowman, Ahti, Felon, Trident, Convict etc. (sorry forgot my Saint Pro). I also had different plastics for most.
The first thing that grabbed my attention was how the Zion felt in my hand; very smooth and comfortable. I looked at the profile and saw it had a very thick rounded edge which attributed to some of the comfort, but it was almost a little overly smooth, approaching slick. I like that it was kind of a combination of a blunt utility edge (Spark, Longbowman, Trident, XXX) and a traditional sharper edge that you see on most drivers (Fortress, Culverin). The inside edge on the underside of the disc was also a little more rounded than others. Because of this, I almost like it more for my forehand shots, some backhands felt like they "rolled" off a little.
I was testing the discs in a light wind, a few hundred feet above sea level. The first volley was into a very light headwind - the Zion gave me a little bit of turn and held onto that for a good portion of the flight, with a dependable fade. Overall the flight was extremely strait. The next throw was with a right to left and it flew very strait with an increased fade from the direction of wind. It held anhyzers quite well and provided good distance; not getting stuck in the line, but not fighting out too early.
The Zion was also a great forehand disc; it has enough turn to provide some good distance, but it also hooks up great. It definitely held the turn for quite a long time. One of the throws was a slightly downhill gentle headwind. I threw a forehand on this to see how the discs would fight and hold their strait to slight anhyzer lines, and really get a feel for the stability. The Zion held the light anhyzer almost the entire flight, and didn't fight out as quickly as some of the other discs, but again it was a great strait flight path.
After a final culling, I was left with the Zion, TP Fortress, and Worlds Opto Sparkle Culverin. I found that all three of these discs flew very similarly, and tested them a little farther because they were most similar to the Zion.
Compared to the other 14 discs, the Zion was average on distance. Overall I really liked the Zion, but was hoping it was going to be a little more stable. My flight ratings would be: Speed 8/9 Glide 4 Turn -.5 Fade 3. If you were thinking about testing this disc out, definitely get one! If you weren't considering it, you should probably still check it out at some point. It's unique, feels great, and even more importantly, flies great.