As TinoPup I cannot say which one is my fave, I have phases on them, however...
Asian Golden Cats are fascinating and when I finally was able to see my first in Wuppertal I promised myself to try to meet every in Europe, as every individual is so unique, striking and mysterious so it's like the invitation to get to know more the species.
I love Rusty-spotted Cats as they could be seen as little, grey and tiny but when you get closer you'll see the muscular and agile hunter with amazingly beautiful markings. And try to look in their eyes! I'm very sad that they are so underrated in zoos, as from I see and talk with zoopeople they don't tend to be very hard in keeping/breeding. As a tiny, sweet hunters they could be a true star if the design of enclosure and communication lead proper. I had to start working on campaign about them...
As a child I loved Servals. They tend to be so independent, agile and quite weird (perfect combination!).
Well and I can go on... Eurasian lynxes as forest magicians, Bobcats as cats of American dream, Pallas's Cats as essence of grumpiness because of living in that mad world too long, Marbled Cats, Flat-headed Cats, Black-footed Cats, Margays, both Oncillas, Pampas Cats... They all have something unique, something fascinating, always something new to know.
A special place in my heart will always go to Geoffroy's cat as they look like everyman (everycat?) but they hide great secrets and abilities. They also invited me to the Felinae World.