Hi guys,
Thanks so much for your inputs. They clarified some issues in my mind and pushed me to further explore the features I look for.
Krummarine, my experience with optics is relatively little by steadily increasing through good readings. First focal, clarity at low light, Mil/Mil or MOA/MOA system (reticle/turret), good mechanical performance and ergonomics, G2 or similar reticle, and relatively extended magnification range for short to long range shooting are all features I look for.
Two Bushnell's options seem to fit in:
Elite Long Range Hunter, LRHS 3-12x 40mm (~1,000 $)
Elite Tactical, ERS 3.5-21x 50mm (~1,600 $)
Some other brands offer similar configurations, although they are much more pricy.
BTW, to reply to your question, Krummarine, I'm a somehow a "freshman" in scope optics. I owned and used only one scope until now, i.e. Nikon's Monarch 3, 2.5-10x42mm (BDC), mounted on a Tikka T3 in .30-06. This scope provides excellent clarity at dusk together with the interesting BDC feature (although in the second focal). However, I wish upgrading my scope option for a new rifle that I'm considering to purchase, which may possibly be in a .300 WSM cartridge (e.g. Browning X-bolt).
Cheers!