The one that I love the most is definitely ladies. Why? Ladies is in my opinion the most graceful discipline. I love to see inventive and really difficult spins. It's both hard and enjoyable to watch. I admire man for doing quads but is it really nice? Beautiful? Just look at the spins of Lucinda Ruh, Sasha Cohen, Caroline Zhang, Mao Asada, Yukari Nakano.
I like both man and pairs at the same level. Man becuase they perform the most difficult elements and pairs because of the variety in their programs. They have throws, side by side jumps, 2 kinds of spins, death spirals and lifts, so it never gets boring .
I really wanted to get into ice dancing but I simply can't After watching one full event it gets so boring. Ice dancing is also easily predictable. I also don't think of it as the real sport. Sure you have to train a lot, but judging here is soooooooo much more subjective.
So the list would go like
2. Man and Pairs
3. Ice dancing