Not a big deal for LR hunting but the Atlas does rattle. Spooked a whitetail at around 30 yards last year. After hunting a few seasons with both it a coin toss for me between the two. I think the true test is my accuracy at 1000 yards which is the same with both. I agree with Broz that Harris needs some understanding and practice for loading the legs. I find that the legs have to be well extended, at least 7" to load and flex the legs, and it difficult to do on a hard smooth surface thst doesn't grab the legs but with practice loading the Harris becomes second nature, and is not an issue in field conditions. I actually like/prefer the speed of the spring loaded legs, and tilting design using the pod on the Harris. I have also developed the technique to attach and remove the Harris from the swivel stud almost as fast as the Atlas pic mount.