As far as just how good he is. Want to buy him because every time I see him in a game he does really well.

Really good imo. Volibear as a tanky dps bruiser is so hard to kill, ganks arent amazing but very good dps bruiser mid-late game

Hes alright, lotta sustain, not the greatest clear time. Evelynn rapes him, so try to kill her early. (if shes enemy jungle)

What's wrong with Volibear ganks? Q to snag and flip them, E to slow them, W to execute them. His level three ganks are pretty strong. He just has a slow clear time.