> The BB10-powered Passport was my favorite device

I loved mine.

My favourite device was my Nokia E90 Communicator. Hardware-formfactor-wise that's the best smartphone I ever owned.

Closed, it's a one-hand T9-driven smart candybar phone. Open, it has a usable QWERTY keyboard, a letterbox screen that can display a slice of an A4 or Legal PDF at readable size. I never watched films on it, but you could do in principle.