in low elo what do you guys feel like is the best support?
i've been running Janna as my support regardless of my elo and I must say Janna support in the 1500s seems to work 100x better than in the sub 1200s.
Alistar/Taric, start boots pot if your a man with an aggressive bot lane AD carry.
Then probably Sona with her buffs and Soraka for the easy.
Alistar because you can straight up roam and go behind towers and gank people mid/top with your ult after 6 and effect multiple lanes. As long as you learn to space your Q and W properly (W>Q combo isn't always optimal). If you can W into wall then Q, or Q then W into wall you gain precious seconds of CC that can make or break kills.
Taric is just man mode, easily visible initiation for your bot lane AD. Max W over heal if your AD proves he doesn't take as much harassment as he dishes out.
Janna is good but she doesn't remove mistakes that the ad carry makes very well. Plus your ult is more for peel than for initiation which doesn't enable you to dictate skirmishes like Taric/Alistar/Sona could.