MSR Denali vs Denali Evo vs Denali evo ascent

So originaly was going to register for some snowshoes for our wedding, but likely will not wait that long and will pick up soe before that. a pretty set on getting some MSR's but REI has 3 kinds listed on their website.

any real difference? I know the ascents have a little bar that lifts out so as to make climbing the steeps easier on your calfs

Denali is the basic snowshoe, and least expensive. The Evo has a tapered shape to suit ones natural gait. The Evo Ascent has a climbing bar that you can flip up and lock in place for climbing up hills to reduce calf strain and leg fatigue. I'd say go with the Evo Ascents.