Glad you've excluded Blue Monday as that was the daddy and blows everything else out of the water.
I had a whole bunch of Stone Roses 12"s, including 'Sally Cinnamon' but I gave them away to my little sister. Also in the pile was the Inspiral Carpets "This Is How It Feels". It either had a live recording of 'Commercial Rain' on it, or that was on another 12" but it was absolutely brilliant.
Thinking back to the early-mid 80s, my favourite was probably a 12" of Bronski Beat, "Smalltown Boy". They used to play the single edit as a video in cinemas at the time IIRC.
Depeche Mode were the other big 12"s in those days and I had a good few of theirs.
My all-time favourite 12" record was a decade later though - De'lacy "Hideaway" '95 Deep Dish Mix, narrowly beating a 12" remix of Robin S "Show Me Love" which I picked up in Melbourne, of all places, a year or two before.