What would be a sensible price for the above second hand? Also, just how flexible are they? Is it simply a case of if I can get the original remote then the Pronto can learn the functions? Can I change the backgrounds/skins of this remote even though it is gray-scale? Can you make the touch screen buttons any shape/size in the editing software? Any known issues/bonus features I should be interested in? Also, how does it compare to the Marantz RC5000i? Thanks.