I had the 8x42 WP for ten years and loved it. I recently sold it for a Nikon 8x32 SE and a Leica 8x20. It it weren't for the money I would have kept the WP because it was SHARP, dead center anyway. Not a flat field, not a wide FOV, but sharp for birding.
Last year I bought the Pentax 8x32 ED and it's got a much flatter, wider field but it is not as sharp dead center. It's brighter (daylight anyway), has much better color and contrast, less CA, but I do miss that extra edge of sharpness for birding.