I bought six heads about ten years ago and killed three deer, all with the same chundoo arrow. I would not have thought that being so wide, they'd fly as well as they do. The third deer was a large doe. I tracked her to a large stream and she was in the middle, under the water with the arrow still sticking out of her back. The broadhead cut such a large hole that her body cavity filled with water and she sunk. The arrow was unbroken. I retired it that day. Although I had good luck with the wide Simmons head, I havn't used them since. They are not the easiest heads to sharpen and that's probably why I havn't used them since. Plus, I like trying different stuff.
The big 200 grain ACE is another rather large broadhead. The only deer I ever felt sorry for after the shot was hit with the big ACE. Those things are terrible.