Do ask about adjustable objective lenses.
Don't neccessarily buy one.
They can be nice to eliminate paralax, nice at higher powers when working up loads, especially at fixed distances.
They can be a pain at the higher powers because of the extra hassle to focus.
I've a 6X24 on a .22-250 that's beautiful for targets, etc. The objective has yardage marks on it that is accurate enough to doing ranging. It sucks sometimes having to focus and might be particularly bogus when hunting cyotes.
I've another with a straight 12X, thin hairs which works very nicely for Pdogs, etc. It, too, is a hassle for "moving" type varmits, 'specially at closer ranges.