leupold ert vs Nightforce F1 vs IOR

[goldnogard]

hello , i have a rem700 in 308 on 20moa base, want a good tactical scope that can shoot out to 1000-1500yards

i am debating between 3 FFP scopes:

1) Leupold mark4 4.5-14x50 ERT M5 $1600 "sounds reasonable"
2) Nightforce NXS 3.5-15x50mm F1 $2200 "i hear its the best tactical for the price"
3) IOR 3.5-18x50 - 4th generation $1800 + free bino "seems to have better glass"

i would appreciate the inputs
thanks

p.s i own couple zeiss conquest scopes, (4.5-14x50 rapid z1000-68MOA) I like the glass but hard to do tactical