Been using land sharks and tree sharks for over 10 years, have never had failure or any issue other than learning how to properly sharpen them. I normally shoot them from bows in the 48 to 52 lb range. I started using the 175 gr woodsman elite 2 years ago from a 44lb RD long bow, but i have only taken two whitetails with them, both were easy finds and so far no problems with them either. Both heads will do the job they were designed for, and from my experience both fly really well. I might be inclined to give the land shark the edge in the durability dept. just on the fact that i've taken alot more game with them... JMO