Re: $1800 Budget for optics, Whats the best
I too would leave Leupold out of consideration. There are better choices out there. I think for the versatility you're after it would be best to budget a few hundred more or be patient for a used deal to come up. An FFP from USO, NF, Premier or maybe even an S&B might turn up for $2000-2300 range. (Some of those you can get new for that). And each would give you a more versatile magnification range...something in the 3/3.2-15/18 range. If you just can't swing the $$$, the 4th gen IOR 3-18 from Liberty Optics is less than you budgeted.
I like scopes that can go down pretty low in magnification but when you get into some of these beefier scopes they can lose their advantages despite offering that. For example, I find my 20" barrel LTR with a NF 2.5-10X32 is much more maneuverable and nicer to shoot off-hand if need be than my 24" barreled .308 with a PH 3-15. Overall, that rifle weighs 2.5 lbs. more. Its advantages are less felt recoil and more "reach" out past 400 yards for stationary or near stationary shots.
I will bring both rifles antelope hunting and if conditions are better suited for 50-300 yard shots, use the LTR. If weather has driven them spooky and they are always 400-600 yards away, then the long gun comes out.