Skins are always nice. I like to pick original skins you dont see alot of people playing yet. If you're going to buy a skin just be sure its what you expect. There is a thread on the league forum with all in-game skins. That way you can see or it is any different then the regular skin. If its not, I usually dont buy it cause its a waste of my money for just a loading picture
If I buy a skin, it'll be emumu or waiting for a seasonal skin...
Too bad I never paid for lol, I love amumu, would have wanted his Vancouver Amumu skin.