Better alternatice would be the K800, the predecessor to this K810. You trade solar for rechargeable but you also get backlit keys.
You're right, that one is good alternate too. All I'm saying is, with all these logitech choices, why bother criticizing the one in this thread if it's not for you? Pick one of many others then.
Life's too short for used/refurbished crap, skins, and screen protectors. F the second owner.