The Peregrine and Predator Premier (8x42, 10x42, 8.5x50, 10x50 roof
prism models) use a body that is nearly identical, the difference being
in the exterior detail and color (the Peregrine is a slightly darker
green color). The water and shock proofing is the same and so is the
30 year warranty.
The difference is in the optics: The Peregrine feature High Definition
(HD) broad band optics which transmit the maximum amount of available
light while allowing the most natural color reproduction.
The Predators feature a high contrast game enhancing objective lens
coating which makes animals pop out in heavy foliage. The Predator
adds considerable contrast to the picture. This process is called
"C.A.T." for Color Adjusted Transmission.
The Predator optics are bright in low light, brighter than most models
in this performance range, however the Peregrine is noticeably
brighter and one of the brightest roof prism binocular made.
The Peregrine's HD optics are more expensive to manufacture, so a
$100-$150 premium over the same sized Predator CAT model is the
standard.
If you're after the brightest, highest color fidelity binoculars,
choose the Peregrine. If you want high performance in heavy foliage and want to "tune" your eyes to your target subject, choose the Predator.