Curious IOR isnt up to specs?
In IOR's product range, there are two scopes that seem to suit the bill for "practical long-range shooting."
I've got an IOR 2.5-10x42 FFP illuminated reticle and it is a great scope, the glass is very clear and the knobs track well. It's mounted on a 18" AR-15. I've never heard anything bad about my 2.5-10, an older design, other than that the new Super Sniper 3-9x40 FFP may give it a run for its money for about $200-300 less.
They also have a 3-18x42 FFP with a 35mm tube (the Sniper's Hide edition) that is apparently now pretty good, but the first batch had issues, though they seem to be resolved and I'm going to get one for my new Savage in 260 Rem that I am building. Featurewise, it is not illuminated, has somewhat short eye relief, and the location of the turrets limits mounting options, which detracts from its appeal. OTOH, it has a great reticle, and you can't find a similarly featured scope for anywhere near the price.
Furthermore, I think people just don't trust IOR/Valdada's service, and there are a few vocal people who seem to hate them because of a bad experience. I bought mine from Scott @ Liberty Optics, so I am confident that he'd take care if me if I had problems.