I have my favorite kind of tails but I accept all kinds and Fifi's tail is definitely iconic. And yes, stubby tails are super cute and sexy.
But what I want to see is the tail being touched by others who isn't the character themselves. Like being grabbed and/or pulled. All tails that once they are seen by my perverted mind, I like to imagine that the nerves in their tails also connect to their genitals and anuses making them turned on as well.
I longly wish for a genre of furry pics where different characters have their tails being grabbed, pulled or are stuck in any sort of way. But to make that happen, I would need to be rich since I doubt any other artist is going to take an interest in this niche kink without money involved. :( @pixel
Docks of ponies also qualify as part of the tail. Also, having the butt included with the tail focused pics is also my recommended vision.