The signature selects are very impressive. Although I don't own a pair, I have used one. Craig bodington rates the old signatures a best buy. The new selects are even better. I will leave you a link to a review on these.
The minox's are excellent as well. If I am not mistaken, both are made in ***an.
Also check out the Pentax DCF SP. They are around 550 or 600 bucks. Rated very highly in outdoorlife's gear reviews.
Some others you may want to check out are
Sightron S3
Cabela's Alaskan Guide
Swift Audubon roof binos (model 828 I think)
All od the se are under 600
Let us know what you get
Here is the link to the review on the burris sginatre selects
www.chuckhawks.com/index2i.scopes_optics.htm
There are other reviews as well and if you join the sight you can have access to more good info