Originally Posted by CS GunWorks
I like all the ones you listed but the think is they are big. If you are looking for one that will fit in a backpack and will offer you great glass would recommend you taking a look at the Leupold 61060 GR 12-40x60mm HD. The glass in them is outstanding. If you get it from us and do not like it send it back.
Mike @ CSGW
My vote is for this one too. Not only are they compact with good optics, the eye relief and exit pupil have the highest numbers of any scope that I know of. Those numbers mean less eye fatigue for long term spotting. To me this is very import when backcountry hunting where most of my day is spent behind a spotting scope. I used a friends last season mule deer hunting and was amazed at how visually comfortable it was to use.
I compared this scope side by side with a swaro (don't know which model but it had an 80mm objective) and felt that while the Swaro showed better contrast, the Leupold held it's own resolution wise.
Given its compact size and comfortable viewing, the Leupold HD is my hands down first choice for backpacking.