I have a DX and I don't really like the keyboard all that much, my main gripe being that you can't lock it into numeric mode. So say if you want to go to a specific page number or location 123, instead of just typing 123 you have to type alt-1, alt-2,alt-3 (or at least hold down the alt key). Other than that, the keyboard is about as useful as any mobile phone type keyboard - which for me means entry is quite slow.