I can see where any dislike comes from - the character always struck me as smug and condescending. I know that can be explained away by her having the knowledge of a 300 year old symbiote, but still, it irked me. Not to the point of hating the character, but I certainly wasn't displeased to see Jadzia go.
Ezri was a little whiney, but overall, I preferred her to Jadzia.