I have the new Monarch in 4-16 x 42 and5-20 x 44. I have had them for about a month. Both are fine scopes. I have already swapped them out with others on my guns and they sighted in easily and reproduced well. Good clear optics. I am well pleased. BTW , mine are nikoplex reticle scopes. I have not tried the BDC, but I haven't really felt the need to. They may work great, but for me the Nikoplex is fine.
I got mine from
www.theopticzone.com.
Monarch 4-16x42, BDC, Matte
$389.00
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Monarch 4-16x42, Nikoplex, Matte
$379.00
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Hope this helps.
Good luck.