I have over 50 bins, I have tried them, and I prefer the 50mm aperture, that is just me. Not to knock the Noctivid 10X owners, but to my eyes I prefer the 10X50 EL SV, UVHD+, FL 10X56, and the SLC 10X56. I have the EDG, FL, HG, SE and Leica (2012-2015) in 10X42, they will suffice.
Just to add...