I just bought a dozen and a half of them and will be hunting with them later this week. They look great -- really strong and sharp -- but I have not used them yet, so I don't know for sure how they will perform. Based on what I am seeing in the construction, and from the reports of others on previous models of Stingers that are not even this beefy, I cannot imagine that these will be anything but great in actual hunting conditions.
I also just ordered two dozen of the 300 grain Tusker Concordes, and they look really amazing for the largest of animals that I plan to hunt -- in my case that will be cape buffalo next July. I ordered the broadheads from Braveheart Archery. Tim Harm is a super guy to deal with. You will like him and he does exactly what he says and charges no more or even less than anyone else around. Plus he is a sponsor here, and we need to support our sponsors.
Allan