I main adc long time now and i don't wanna change this now when it's the final stretch to S4.
However, somtimes I get bored playing again and again the same champs(although i have all marksmen) and using similar playstyles. So i started looking for unconvential adcs.
I checked base damage, AS , range, skillset and many more but seems like nothing is nowhere near to the weakes adcs.
So these are some champions I tried(in non-ranked games, of course):
Ahri, Annie, Fiddlesticks, Twisted Fate, Kennen[great results but not something new:(], Zilean, Lulu, Thresh, Teemo, Sona, Nidalee

Do you see if any of them or other could work as adcs? Any other suggestions?