Hi Starkler,
I enjoy using them. I've only had Tasco 8X30s before so thats all I've had to comare them to on a regualr basis. I find they have good eye relief, (the eyecups roll back for spectacle wearers). Very comfortable to grip and hold (non-slip rubberised surface). Excellent crisp viewing on terrestial objects. There is a slight optical distortion around the edges due to the curvature of the objectives, but not significant enough to affect viewing. Dioptic eyepieces (generally pretty standard on binocs) and images focus easily and quickly.
I find them great for picking out globular and open clusters. Toucan 47 and Omega Cent look great. Jupiter and Saturn show obvious disc but certainly no detail. The moon is crisp and clear, taking into consideration seeing conditions. On bad seeing night I can at times see the shimmering across the face of the moon. For me where I've found them performing the best (apart from the moon) is comet viewing. I bought them just before LINEAR and NEAT in May earlier this year. These comets blew me away in these binocs. Clear cores, coma and tails. I'm still impressed viewing Machholz at the moment.
If there are any negatives about them is their weight. the are fairly heavy for small binocs at about 900 grams. I tend to use them on a tripod or resting on my eyes while lying in the ground so in those situations they very steady. Free sighting you notice it after awhile.
I've just popped outside and checked for internal reflection. There is a ghost image looking at the street light outside my house (25 meters away) but not excessive. At about 100 meters it was neglible, though there was some chromatic aberation on the top surface of the lamp (bluish mercury lamp?). I've also checked a house around 3-4 kms away on a hill that has coloured lights (white, yellow, red, green, and blue) around their balcony. I could clearly distinguish each light though there would probably be only 0.8-1 meter spacing between them. (I'll let you work out the physics of the resolution
) Focus was good considering the distance through turbulent hazy ground air.
I've used other more expensive ones since buying mine and I am still very happy with the quality of both the optics and manufacture for the price. If I lost these I would happily buy another pair tomorrow, assuming I couldn't afford a MUCH bigger pair
You know 20X80! Actually maybe I would still stay with these as I like their field of view, 6.5 degrees.
Hope this helps Starkler
cheers
Paul