I would just suggest getting Mac OS X. Apple has really done well with accessibility. You also still get the underlying unix system if you want to, but the UI is great too. You may think it's not a huge thing, but you'll see once you try. And people do say how crappy the Linux desktop UI's are now, like Unity and the new Gnome.
It's super accessible (Score:3)
Because you can do everything with the command line. Keyboard text input. Spoken text output.
Re: (Score:-1, Troll)
Re:It's super accessible (Score:1)