Yes, the 80mm will entertain much more light over the 60mm. The 80mm weighs in at 2lb 15oz. It is bigger & a little heavier but it will do better during all lower light conditions. The DiamondBack 60mm & 80mm are non HD models, the 80 runs aprox 450.00 - The photo is of the 80mm.
HD glass is recommended if hunters plan on doing much digiscoping, this is because you have a clearer & more colorful picture just as your TV is much better with HD than non HD! Colors & clarity will "pop" much nicer!
ElkNut1