A more basic test I'd like to see is how well do these 10 phones stack up wrt to the task at hand. AS PHONES.
I have a smart phone, and my biggest annoyance? The simple task of "I have a phone number and I need to call it" is far more complex than it needs to be. Calling contacts already in the phonebook? Easy. Punching in a phone number has far too many buttons to get back main screen, go to phone mode and bring up the actual dialer. Once there, either it's a touchscreen without real buttons, or it's a sub-qwerty tiny keypad that may as well be annoying touchscreen at that size (The kind that RIM is quite fond of). (Connection services like Google Voice are up to the should-be-trivial task though).
Then again, I suppose the smartphone route would be to print up QR codes on everything and allow dialing of a cellphone camera picture.