What scope to get

[Colorado Osprey]

Used, demos and blems can be bought from thesamplelist.com and natchezss.com

I recently bought a new old stock Vari-X II instead of the Vari-X 2. The upgrade only offers between 1-2% better light transmission. The price difference if you can find the old/new stock is well worth the search, usually savings is over $100.

I have a Weaver Grand Slam on my 300 Win Mag Sendero that I love. 6-20x Still in your price range, holds zero and has performed flawlessly for over 15 years.
Bushnell Elites should at least get a look at as well as Nikon Monarchs. Quite a few like the Burris Black Diamond; used should fit the bill as well as the price.

Optics planet and SWFA usually have the best everyday prices. Natchez Shooter Supply has great sales as well.