If you tell us what you are planning to make, folks might have some suggestions on which will work better.
Esters means the yeast produces a lot of esters which usually give a strong, fruity aroma. EVC is enhanced varietal character - these yeast may be able to promote the aromas of some grape wines by enzyme activity that releases aroma molecules from more-complex forms. It probably doesn't mean much for traditional meads, and while it may have some impact on fruit meads, we don't really know how it affects different kinds of fruit.