Like all things , picking a scope is a compromise , you need to pick the model that comes closet to want you want in a scope , and how you will use it .
For me , I like to keep things as simple and error proof as I can , so for Tac & field shooting , I tend to favour Mil/Mil FFP scopes in the 3-15 0r 4-16x range with 50mm Objectives , so I donot stuff up the Elevation setting , I like single turn or double turn indicated , also I like a lot of elevation per turn , so other than the new NXS turrets ie 20moa & 10mil , that really only leaves the S&B PMII and the Premiers .
The Hensoldt does not have a zero stop turret or a turn indicator , maybe they will in the future .
USO are not in the same league as S&B or Premier , simply look at what shooters are actually using in the tac shoots , I find they are not as well made or have glass that is as good as the other top 2 , eye relief is also very very short around 2 inches .
I have used MK4s , USO SN3s , Premier & S&Bs , I have not used any NXS as they in my view did not have large enough range of adjustment in one turn as I wanted .
The scope I use the most & am most impressed with is the 4-16x50mm PMII , Mil/Mil , single turn with P4F reticle , quite simply this thing rocks .
The glass is not quite as good as the hensoldt , but as I said , you are picking a scope that has the best features overall , so on balance for me thats the PMII at the moment .
Later Chris