Howdy,
I personally own two Alpen products. One is their 10X50 highest end binocular. It is excellent for the money, but still not up to Nikon standards. It ranks above most Bushnell binos though.
My second purchase was a medium line, 4X non-adjustable scope. It is very, VERY adaquate. I'm not sure but what it is as good as my Burris Fullfield and Nikon Buckmaster. I have recently ordered 2 more scopes...(at bargain basement prices) and I hope that they are as good. It will be interesting to find out.
I personally think that these optics are way below the main name rifle scopes, but their top of the line binocular is about in the middle of the pack for name brands... less Swarofcourse and Zeilca you understand. Not bad for the money, Never had one break. I have used the dog out of the ones I own though.
Hope this helps,
Coach