A scope is an optical AIMING device.
It is not an optical device that you peer through for hours, so no need for it to be perfect in optical clarity, etc.
However, it must be DURABLE and optically adequate for your needs.
I pick Leupold for my scopes, since they are durable, have excellent warranty, and are affordable. There is no doubt that some Euro glass will have better optics, but to me it is a moot point.
I am far more interested in sinking my money into high end binoculars (I use Leica Ultravid 10x42) and spotting scope (I use Ziess 15-45) which I will be peering through for hours.
Leupold scopes are very good, they are very durable, and they do everythign a north american hunter needs a rifle scope to do, at an affordable price.
More expensive optics are excelent, but I do not believe them to be necessary, under most field conditions.
