Really looking forward to this thread taking shape, and thanks for starting it b-ewing.
As of now I only have White's and Nick's out of the bunch, and have only had my Nick's for a couple weeks, and given it's July...they haven't gotten as much wear. The major difference that I noticed right out of the box was that the arch isn't quite as high on the Nick's, which isn't really a problem, but I do love the idea of the arch collapsing to fit my individual feet (as the White's do).
I'm not a fan of Viberg's slimmer lasts for my style, and I really like the Arch-Ease system of White's, so I have yet to pull the trigger on Vibergs, but if the right pair came along I'd love to see their supposed superior finishing.
I'm utterly ignorant to both Drew's and Wesco, but hopefully this thread will change that.