I use Gold Tips too, and have a durability story about them.
I once shot 3 elk with the same Gold tip arrow.
The first one was a bull at 20 yards, in and out between ribs, heard it ting-ting-ting down through the trees behind the bull. Came back the next day and found it just laying out on the ground. Cleaned it up, inspected it for damage and couldn't find any. Put a new Muzzy on it and found that it shot fine.
The next season I shot another bull with that arrow, 16 yards. Bull was on a slope above me, arrow went in between ribs and out through one rib and then stuck into the ground behind it. Cleaned it, inspected, found that it was fine and still shot accurately.
The next season I shot a cow quartering away at 38 yards. Arrow stuck in the far side shoulder and she broke it into 3 pieces during her 80 yard dash.