Sion is in a pretty good spot right now, what are your opinions about him?

After CoC came out, I've found sion to be a lot better than before and actually be in a great spot. He finally seems tanky enough to fight and has more consistency in his disruption to be more effective in teamfights than ever before. Additionally his high cost shield isn't an issue anymore for its low value because the CoC shield can actually tank some damage and have the 60 some mana be worthwhile every 30 seconds (soon to be 45-30) So I'm wondering what others think about his current state.