Past to Future samples are one of my favourite developers. They recently put out a Kontakt library made with the holy grail that is the Yamaha CS-80 (1976). It was recorded with a Lexicon 224 and baked onto a Studer A80 tape machine. It's about as authentic as you'll find. There's 12 patches all designed to capture the vibe of Vangelis and Blade Runner. They're seriously dreamy and huge, straight out of the box.