I can't comment on the Sightron as Ive never even seen one..........
but own 6 of the new Zeiss Conquest V4 4-16x44 and one 4-24x50, most are Z-Plex or the Z-MOA(2 Moa hashmarks) reticle and all have the Zero Stop turret, I prefer the Z-Plex crosshairs for hunting, I have one of the Z-BR graduated Christmas style reticle on one coming in the mail,
The scopes are tough as nails, the zero stop turret tracks spot on as Ive done a box test and it returned the 5th shot to the same hole on a 4moa box test,
The optics are among the best of any scopes out there, we ( 5 guys) did first and last light tests on 6 scopes, Leupold VX3i 4.5-14x40 30mm, VX5 HD 3-15x44, VX6 HD 3-18x44, Zeiss V4 4-16x44, Swarovski Z6 2.5-15x50, Zeiss V6 3-18x50,
and the Zeiss were the best(preferred) in low light tests, crosshairs were visible the longest into the dark, Swaros disappeared at last light ? one fellow preferred the leupold VX6 HD crosshairs.
Optical clarity/brightness was preferred on the Zeiss overall, in the daylight the clarity on the Swaro was as good but brightness was not as good as the Zeiss
CONS- slightly heavy for an all round hunting scope if your backpacking,
4-16x44 22oz, 4-14x50 24oz
6-24x50 ZMOA crosshairs( 0.14 line thickness at 24x) a tiny bit heavy at the range out at 300 yards and beyond(4-16x44 ZMOA2 0.19 line thickness at 16x)
overall one hell of a scope for the money, I have pretty much switched most of my rifles I use over to them.