New Support Recommendations!

I'm looking for a new Support to practice with for the 2015 ranked season. I normally play Zyra, who I have a great track record with, but I want to have a second and third option in case she's chosen or drafted out during intial picks. Who do you all like for your Support and why? Are there others who play like Zyra? I'm thinking Morgana (I used to play her often), or I know Janna and Nami are favorites. Any others?

Thanks!