I ordered original batch and haven't used my predator since. Honestly, it has nothing to do with the predator's lacking anything other than size. The biggest challenge I have while hunting from a saddle is my weak side. The ambush solved that. To be completely transparent, I believe the predator is a better design, more user friendly, and bites trees better, BUT is just lacking in real estate for me and my preference.
I belief the teeth on the ambush bite too well and had multiple problems with the ambush when I first got it on setting it. Since, I have learned the proper way to set it, which is different than both the predator and every stand i've ever owned, it has made it much more enjoyable. One flaw is with the added width, no matter how well it is cammed over, even when excessively tight, the most outward teeth will still slide after moving around the tree some. I never had this happen with my predator. Again, I do believe this is solely due to the added width the ambush brings. Luckily it hasn't effected anything yet for me while hunting.
Sure, it's annoying for you to set it to the best of your ability and within minuted the outer teeth have ate away the bark enough that there is some movement there. As long as you can catch a deer coming in and don't wait until the last minute to move around, I think you'll be fine. Another thought is, how will the deer differentiate between a bird moving around the bark and the teeth sliding a little? who knows. I think it'll be fine, but I would prefer it to be solid the whole time.