I bought a Predator IV this summer and have been putting it through all kinds of tests, I really like it. It shoots about 2-3" high from straight down out to about 10 yards, then right on from 10 to about 28 yards. At thirty its maybe 1-2 inches low. I'm going to adjust the arrow speed adjustment and see if I can't get a few more yards out of it. My bow shoots 250 fps. Also I would recommend the "Perfect Circle" peep that Preadator sells. It really works well in conjunction with the sight and has tightened my groups. Lastly, IT DOES NOT MAKE ANY NOISE.