I do not call myself an expert..however I bought an Oberwerk 20 x 80 from the US based on an Cloudy Nights review some time ago ..now I find Lee Andrews has the exact same binos for sale at $100 less than it cost me to import from the US.
I do not own any premium binos but own a 7 x50 (Gerber), a 11 x70 (Andrews) and an Oberwerk 20 x80. I find all suitable for astronomy-again I have never owned a Fujinon (even though I have looked enviously through the odd pair from time to time) so I can't really compare. However of all my binos the 11 x 70s are easy to hand hold and have the greatest eye relief..not withstanding the exit pupil not being theoritically right for someone my age , I still find these the binos I use most. These are the ony binos I can use without having to take out my glasses. And they cost the least...$119 from memory.
anyway it may be worth asking the folks at the bino astronomy yahoo group for an opinion, though Andrews sells the same product supposedly
http://groups.yahoo.com/group/binocularastronomy/
hope this helps