FX-III 6x42
Sightron SIIB 6x42
Nikon Monarch 6x42
IOR Valdala 6x42
FX-II 6x36
Sightron SII 6x42
Pentax 6x42

In that order. Between the top three, the difference is so small, it basically ain't there. The Valdala is better than any of those three in glass, but it's heavy as hell and SHORT on eye relief.

The FX-II and SII are a step down. The FX-II is smaller, but not quite as bright (IMHO). The SII has the glass of the FX-III/SIIB/Monarch class, but a noticeably shorter eye relief.

The Pentax lags well behind in eye relief and in glass, though is still good glass.

And, yes, I've either owned or still own every one of those.