I recently purchased a 4-14 shv and have been using an siii 6-24ffp for some time now.
Optically they both resolve about the same, the shv is brighter though.
Only negatives I have about the shv are the smallish turrets and the lack of a proper mil based reticle and corresponding mil adjustments. All the wind formulas and mover leads I have ingrained in my head are mil based...
My gripes with the sightron are turrets that get moved accidentally every time the rifle is rubbed on something, no illumination, the reticle is a bit thick at max power, and I wouldn't trust it to take a hit and shrug it off. It "feels" lightly built for field duty, and I think that's what pushes some folks away from them.