Depends on which Ganondorf. I always like Ganondorf, but the thing I liked about Demise is how he acts. He's obviously confident in his abilities, but at the same time, he has a cool head. He's willing to wait for Link for the final battle, he seems to somewhat admire Link. Even though he felt he was stronger, he commended Link for his abilities and his courage. The worst he says to Link is, "If you are ready to do, fight me. If not, cower in fear like all the others".
Demise almost seemed pleased to have someone stand up to him.
Similarly, Wind Waker Ganondorf is one of my favorite Ganondorfs. I can't really think of a single Ganondorf I like MORE than Demise. But, I can think of a few I like just as much.