I know vortex have a diehard following, but I gave up on them a while back. I just sent too dang many in for repair. If you want that magnification level with something that won't break, I would look at a SWFA 5-20. They're one of the few non-nightforce scopes that pass most every torture test you could put them through. And substantially cheaper than the razor. Usually $1500, but they regularly go on sale for 700-800.
SWFA is an optics manufacturing specializing in rifle scopes built for tactical, hunting, and long range shooting known for quality and precision optics.
swfa.com
I don't know arken or have firsthand experience, so I can't tell you anything about those