Not sure what to main..

So I went from being an ahri, zed, and Fizz main. I love all those champions, but I wanted someone with a slightly different play style. I moved to Cassiopeia, jayce, syndra and oriana. I'm practicing early game cs'ing and every champs base damage is different so I have to practice them all differently. I'm not sure which I like the most and which would be best for me at this point!! Any tips?