Just some feedback: I went with the Rii remote I originally posted. Couldn't use the VISA100 code, as I have already used that for something else. I am very satisfied with the purchase. I previously used Yatse to control OpenELEC from my phone, but this is way better and more convenient. The keypad feels very solid and most of the media keys work without any configuration.
I don't find the lack of backlight to be a problem, because of the controller-like grip: the keys are exactly where I expect them to be. Although, I am used to typing on qwerty keyboards in the dark without a backlight, so maybe it's just me.