Looking for support champion

I am nearing level 30 and nearing the point when I can start entering ranked matches, but before I did so I wanted to make sure I had learned to become at least decent on a champ in each role, that way if I am last pick I can contribute to the team and not be a negative asset and hurt any ranked team that is unfortunate enough to be grouped with me. So far I have found champions I like for every role except Support. So I thought I would come here and ask the opinions of others, about which champ they think would work well for me since Support champions are kind of spread around all over the place sometimes.

What I am looking for in a support champ is defense and mobility, preferably something that isnt heavily skill shot reliant as I am fairly bad at skill shots. The champions I currently use are Wukong for Top lane (I like the character he is based off of, and his ability to get in with nimbus and out with decoy make a good champ for me) Mid with Ahri (a "wukong friend" who also has really good mobility as well as damage) Master yi (my first champ.. jedi skin.... again a way to get in and out if I need to with his ult and alpha strike) and finally Tristana adc (again multiple ways to get in or out when need be with the leap and the knock back), so I am trying to find a champ that fits this kind of mold for support. One that gets in, and gets out quickly. The reason I want it to be fairly tanky unlike these champions is because I know I am expected to buy the Sightstone, and I personally have this issue with buying items on a champ that cant really benefit from it. A non-tanky Support that doesnt much care for health, I might just buy 2 stealth wards and some more AP items instead until level 9 and I can upgrade the trinket saving myself 300 gold all around and making my early strength "better" thus possibly getting more gold any way. (I see the sightstone as 400 gold for 150 health and 400 gold for infinite wards. The 400 for the wards is more then worth it, but the 400 from the health just gets added on to the ward cost if I dont care for the health, in which case I look at the level 9 trinket which costs 250 gold (difference of 550 gold in this case) as a good replacement as long as I can keep under 550 gold in wards until this point with out leaving my lane open to being ganked which at 1 ward per 3 mins is about 21 minutes of vision (7 wards) before this becomes an issue which is typically much longer then neccisary for level 9, assuming some one doesnt see the stealth wards and kill them, but because I know my team would rage at me for not buying a sight stone (probably rightfully so) I feel if I am going to be satisfied with a support champ it needs to like health that way I dont feel like I am wasting over 300 gold.

So any thoughts? on a tanky mobile support champ.