They're actually quite similar. Any differences I describe are small. The Adorama seems to have a slightly whiter base. In sepia and selenium they tone similarly. I haven't tried gold toning, or hand coloring with them yet.
I added a 25 sheet pack of 5x7 (matte/fiber) to an order I was placing. It was $6.50 well spent. I plan to order more, once I determine how it hand-colors.