Only handful of throws, so take with a grain of salt:
Lime Green 175g GStar Thunderbird -
Hardly noticeable tick more stable than the GStar TeeBird3 I threw along side it. Almost identical distance, almost no turn, and a slightly healthier fade. When all was said and done, the throws with the Thunderbird were consistently better, but the results were almost identical to the point where the discs could have been interchangeable.
For reference, there was a left to right wind that was knocking anything down that was fading into it. Thus the discs that were turning or flipping were aided by the wind while anything fading into it where slammed down earlier than they should have been.
All and all, I think I would still prefer my TeeBirds, Gazelles, and Leopards (or Trilogy equivalents such as the Stags, Truths, and Hatchets) in the woods, but there was enough in the Thunderbird that I would actually trust it more than the TeeBird3 I was throwing for open field shots, especially if conditions were less than ideal.