About 18 months ago, I did a lot of pairing down ... and now only have two types of rifles
Bolt guns (7.62x51 rem700, criterion 20/22 inch barrels, KRG bravo)
Stoner Rifles (Mk12 556(18) and Mk11-ish 762(20) )
So, since I only have two types of rifles, I only need two types of scopes, so I made up this scope list around Feb 2020
And surprisingly, I wouldn't change it much.
Basically I use 3-9x on the stoner rifles and 3-15x on the bolt guns.
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I value light weight, short scopes, low price and ability to hit what I'm aiming at night or day, rain or shine, hot or cold.
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For bolt guns I really like the NX8 2.5-20x T3 mostly due to the 2.5x on the bottom, that gives more FOV, even thought NV or Thermal clipons. And at night almost all your FOV comes from looking thru the scope (since it is dark).
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For stoner rifles, I want smaller, lighter and more FOV if I can get it. My two purchases this year were the L&S mk4 2.5-8x TMR ... and I'll admit some sentiment was a factor in that one, but I have enjoyed using it, I've been testing it with a new German thermal clipon lately, the Andres Tig-IR and its working GREAT !.
And just got Trijicon Credo 2-10x MRAD-Tree, its an FFP. Some have said they can't see the reticle, fortunately, I can, so I think it will work for me.
So on a stoner, I also want to be able to pull up quick for snap shots while on the move. And that means I need a reticle I can see quickly. So before I got this credo I also looked at
NX8 1-8x
Credo 1-8x
March 1-10x
VO g3 1-10x
I ruled out the, all out based on price, as the credo 2-10x was still several hundred lower, but it was a close call with the credo 1-8x.
I currently have RMR offset dots on the mk12s and that serves to meet the requirement for a quick snap shot, but I'd like to repurpose those over to G-19 pistols. So still might move towards the 1-8x type scope for the stoner rifles eventually.
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So "long distance". Well for me, for the record, I shoot out to 900yds with the 30 cal rifles and 750yds with the 556 rifles. I do shoot further, but when I'm shooting "for the record" those are the distances I max out at. And 10x magnification on top is plenty. For shooting the bolt guns out to 1200yds not for the record, the 15x top end requirement is fine. But I don't see needing more than 10x on a stoner rifle for the way I use them and FOV is more important, i.e. lower low power magnification.
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But if I was using a stoner rifle like a bolt gun, then a 3-18x would make sense, in which case, if I was buying today, I'd get the NX8 2.5-20x with some reticle of choice as that gives you a little more on the low end (2.5 vs 3) and a little more on the high end (20x vs 18x) and the street price is well under $2k for most reticle choices.
My second choice would be the L&S mk6 3-18x with some reticle of choice, they are shortest and lightest in class. A new one will probably come in right around $2k street price. But I see used ones going by fairly often and I've had great experience with L&S service. They completely rebuilt my Mk6 3-18x H59 no-Illum into a 3-18x T3 with Illum for $1200 and replaced the M5B2 turrets with the M5C3 turrets as well (and you definitely want the M5C3 turrets, the B2 turrets suque !!! )
But again, first choice NX8 2.5-20x with no hesitation.