Dave Dean,I am familiar with the Adrenaline you have been using. Compared to the Vindicator they are pretty similar in styling and with features.Waterproofing: Both have Gortex Lacing: This style has tabs instead of eyelets. You will not notice a difference in this category. Insole: The Vindicator uses what TNF calls Norhodic footbed. It should be the same one you have in your Adrenaline. Take a look at http://www2.thenorthface.com/ap/technologies/technologies-FO18.htmlSole: Uses a more aggressive (larger lugs) Vibram sole. If anything I see this as an upgrade.Shank: Both shoes have a synthetic shank for added rigidity.Fit: I have not tried the Vindicator on. From pictures it does look more rugged all the way around. Possible a little wider and higher volume. Bottom line: It looks very similar and the Adrenaline sounds like it worked very well for you. Pick up a pair, try them out, and post a review.Mahalo, Sumo