I'm about to buy a GS3. I have seen every model. I haven't seen the Predator series or many of their binoculars.

I really like the GS3 2-10X42. Eye box is the best I've ever seen,including many Zeiss, Leupold and Swaro scopes. I'm not terribly fond of either reticle. The S1 is OK but not what I consider great,but I can live with it. The #4 or 4a is razor thin and the thick portion way too wide to be of any use in low light. The glass is as good as I've ever seen and I just bought a Swaro Z5 and Leica ERi. Keep in mind that my only viewing however has been in and outside of a store in good light. I have not seen one at low light.