On any of the Monarch line they would be set to 1/4" at 100 yds. The only exceptions to this would be the rimfire, slug and blackpowder scopes which have a 50 yd, 75yd parallax's.
In the interest of clarity, Monarch may also be 1/8th adjustments (have 5-20x, 6-24x, 8-32x).
Would have a look at the reticle, are locating your target in the middle of a circle so the advantage is are not obscuring your target with the reticle so no subtension issue, the disadvantage are not laying the reticle over your target... (different sides of same coin).
Like the Nikons as the lines of the reticle are thin and with the BDC the reticle has various aiming points - whether the centre of an open circle or a crosshair where circle or subtensions intersect. You may prefer a standard ballistic plex style reticle though, for you to decide.
Believe some of the BDC models (i.e. 5-20x) are now discontinued.
Have had warranty issues with Nikon products (turrets popped off, threading in spotting scope mount separated, lens had front focus issue...) but other than waiting and waiting... Nikon has thus far replaced these products without issue. The included flip up caps are junk, expect to replace them / factor into price - are a poor design, look at hard plastic protruding hinge, if catch on anything then done (especially if cold), aftermarket are generally rubber / soft plastic with some give).
Based on personal experience find Nikon binoculars stand out. Range finders reasonable. Scopes becomes price / performance/ reliability issue, your assessment may differ. Leupold, Vortex, Sightron... all so close (like Zeiss too in terms of clarity, brightness, reticle but price..., am "frugal").