A bigger screen also means, that we have more space for the Keyboard. I still remember the Sony Xperia X10 mini pro. The keyboard size was a joke. I use a Photon Q personally, happy with the overall size and the Keyboard, I expect to enjoy the FX-Device after a few days of getting used to it aswell. Transition from the Desire Z to the Photon Q took me several days, I did not have any problems with the Desire Z's Keyboard, but i would never want to change from the Photon Q to the Desire Z again (only regarding the Keyboard of course).