X2! The Monarchs are great binos for the money. Not sure what 3D venue you use, but IBO regulates the power you are allowed to use. It has to be 8.5 or less. If you shoot ASA (Scoring 12's, not 11's) you can use anything. The Brunton Eterna's are great binos for the money too. They are a little on the heavy side but very good quality. If I had to do it over again I would have probably gotten the Brunton Eterna 11x45's instead of my 10x42 Monarchs