I don't know about those but I've used a Psion series 5 before. The keyboard on it was 'just' typeable with a half decent speed on it. My fingers are long and semi thin ish at the tips because I'm asian and typing on it wasn't too bad but not great. Laptop keyboards are good for me. The 12.1" screen and laptops are fine with me also because of my fingers. Same speed as typing on a normal keyboard for me.