I'm curious about Opticron's new Traveller BGA 8x24 compact pocket roof prism binocular ($329 USD). Initially I was looking to replace my cheap 8x21 pocket Bushnells, but at $329 I wonder how the Traveller's quality might compare to my Nikon Ecobins 10x25 reverse porro compact (~$120) in terms of sharpness, distortion, CA, etc. Following the rule of thumb that one must pay 3x for a roof to match the quality of a porro, should I not expect much difference?