NP,
Riflescopes "all optics in this matter" reticles are presented to the shooter in relative terms. The relative is the FOV as demonstrated with first focal plane optics. With any UOM Reticle the subtend must span the distance as designed, if a first focal plane, no issue, second focal plane, typically in the highest magnification setting "4x". With that, at 4x the FOV is much wider than a 6x optic, but 4x more restricted then a RDS system. This leaves alot to be desired and also why the market is going away from UOM-Reticles in 4x. BDC reticles are more useful in this power range, this is also why I find it hard with any optic prices above $700 to not just buy a 3.5x ACOG and be done with it for life...
To drive my point home, if you have access to a first focal plane optic that adjusts down to 4x, go use it past 400yds for holds and ranging. Then adjust the optic to 6x and see the diffrence for your self. Just looking through it is not the same as holding, ranging and using it.
Two of the three optics you point out are BDC with 9", 18" range-finding ability, not a UOM-Reticle. So any of them are fine in this reguard. If it was up to me, I would run the Trijicon because I own one and have used it for the past 8 years. Vortex has a great warranty and the warranty gets used alot... Steiner never used it.
John