Riven is by far my favorite champion at the moment. I have some pretty awesome scores with her. 32/7 my best. Today in ranked I had like 23/5 but we still lost due to the autism in the group.
I've started playing almost exclusively Ranged champions top, or ones that have very good escapes.
My top 3 at the moment are AD LeBlanc / Jayce / Nidalee. I used to play a lot of Fizz top, but never really felt like playing him recently ;o.
I have never heard of AD Leblanc. I think I might have to give it a shot. Why are the benefits of AD LB.