High level LoL player, ama.

Okay, so I thought what the heck yesterday and re-downloaded LoL (haven't played a game yet).
I have Cho'gath and I think Garen and Shaco for some reason, thats the 3 who I purchased back when I played..

Any of them any good still? I use to like playing with Cho I believe!
Also LoL looks a lot different to when I used to play.
Was gonna try it out again tonight!