On the versus other type of mount. I would suggest looking at the only BCD mount on the market. It lets you adjust the angle of what you are filming when desired.It is the Z Gear BCD mount which can also can be extended to give you even more filming angles, You can adjust the arm downward to give you a forward filming position,allowing you to see what you are filming. Take a look at this how to use video Z Gear - Extension kit in the forward facing position - YouTube