I do not think you will see any difference, in use, between 2-7, 2.5-8 or 3-9. I used a Leupold 2-7 on my 308 Win and on my 338 Win at different times; these are several 3-9 scopes here to be mounted, and one lonely 2.5-8 that will go on a Ruger #1. Pick one and go. I am very much a Leupold fan, so chose highest series of any of those - I have bought 3 x 3-9x40 VX Freedom in 2019 - no fleas on them at all!! You will find difference, I think, as you change from brand to brand. Someone will recommend Vortex because of their warranty - I do not own any - do not care about warranty - whatever I take out has to actually function correctly - I live too far from city to make "warranty replacement" a reasonable thing to plan to do.
I have a new, bought in June this past year, Leupold VX-3i 3.5-10x40 that will be going on a Weatherby Mark V in 7mm Weatherby Mag. An awesome looking piece, that scope is - but no experience with it yet. Price was $629.99 before taxes and shipping.