I am a big fan of my Baker's Edge pan and use it just about every time that I bake bar cookies or other treats I might ordinarily use a rectangular pan for, including brownies and cheesecake bars. The pan's unique design allows for more even cooking and a higher crust-to-center ratio for baked goods. Cooking for Engineers set out to scientifically test the pan in a side-by-side bake off with a 9"x13" rectangular pan. Their goal was to test the evenness of the cooking, as compared with the standard pan, and to see how the crustier batch appealed to tasters.
The Baker's Edge cooked very evenly and produced pieces with appealingly chewy edges (unlike the hard edges that can result in regular pans), but the brownies weren't quite as popular with center-piece lovers as the brownies from the larger, more traditional pan. A few batches later and C for E found that a slightly shorter baking time made the whole batch of Baker's Edge brownies just like center-pieces.
Their overall verdict was that the pan worked extremely well, with the only real drawback being that it was difficult to get out the first piece. Of course, as the chef, having a sample piece for yourself isn't such a bad thing, is it?