My favorite would have to be first Cadillac, my first love, that has kept my heart to Cadillac since I was 8--the 1975 Cadillac Sedan Deville d'Elegance. It had so many electric buttons that I was fascinated and as I got older, I realized the extent of all of it's options. It was white with a white vinyl top. The interior was Manhattan (I love those names they used to give to everything), a dramatic two-tone crushed velour in dark blue. The car was loaded--Cruise Control, Tilt/Telescope steering wheel, Twilight Sentinel, Guidematic--Auto Dimming, Automatic Level Control, 8-track stereo tape player complete with the Cadillac Mancini Elegance 8-track, power passenger seat, electric rear window defogger, Theft Deterrent System, electric trunk release with power pull-down, Illuminated Entry System, Illuminated Vanity Mirror, Controlled Cycle Wipers, and remote passenger side mirror.
Standard features included Automatic Climate Control, power door locks, power windows, power antenna, power driver's seat and starter interlock system (you could not start the car unless all 3 front passengers had their seat belts fastened).
It was an amazing car that kept me with Cadillac all these years.
Max