I think it's Lu Chen's time. I've been voting for her since the round Lipinski was voted out. I love her skating, but I don't think her competitiveness and overall level (technically) can compare with the other skaters on this list.
The other skater I would have considered is Mao Asada. Mao is a strong technical skater who can pull off triple-triples and triple axels, and delivers terrific spins and spirals. She's also fairly strong artistically. Artistically, her Chopin SP was better than any of Slutskaya's programs, for example. True, she never won Worlds convincingly with two completely clean programs. But she was usually a contender for the top, and was a solid 2nd place in Vancouver.