I'm going with an Aimpoint 3x tripler behind my old Aimpoint ML3, but all that is over a grand with Larue mounts.
I think the most bang for the buck is a 1-4X scope ( it HAS to be a true 1X, NO magnification on the lowest setting for a combat rifle to slow you down). I think the Burris XTR is the best out there for under a grand (under $700 online). The Larue LT104 is the top shelf mount, but a forward mount like the new Leupold IMS mount with Leupy QRW rings would do as well for less $$$. This is the exact setup I'm putting on a new 3-gun rifle.
Question for you TAK, having run a 1.5-5 Leupold and run my Aimpoints with the front cover closed, how does the Bindon Aiming Concept fit in with the "true" 1 power theory? As long as the red dot is there I fail to see why a true 1x is needed for fast work. Thinking ACOG w/4x mag as well.
I've also been thinking about trying a Trijicon 1-4 which is supposed to be a true 1x and has to be better than any Burris...
The 4X ACOGS suck balls inside 25yd, they are painfully slow. IMO, the very critical eye relief is the major problem that slows you down, but I watched a PJ drop to prone and clean 20 8in head plates with 20 shots at 150yd a few days ago so everything is a trade off. In an urban environment, I'd want an Aimpoint T1 mounted in a "one o'clock" mount to go with an ACOG.
The Bindon Aiming concept appears to work for some and not others (weak eye dominance?) The BAC works great on my 1.5X ACOG Mini, but I've not done timed tests against an Aimpoint with it yet.
Maybe YOU can do fast work with a 1.5-4X scope. I've learned a long time ago that a sighting system that rocks for one guy doesn't work as well for another. As a general rule, I'd say ANY magnification is undesireable, IMO.
A lot of 3-gunners really like the Trijicon 1-4X, just make sure you order the correct one, they make two, one is optimized for an AR (eye relief, IIRC). If you zeroed the tip of the triangle at 50/200, and figured out what the drop was to the bottom of the triangle, you'd have have an effective sight for probably as far as most of us have an business shooting.
Don't discount the Burris XTR scopes, they are US made, with good glass.