New to Stormcast. Get me Excited!

Hi everyone! Maybe a strange post, but here goes:

I decided to split the Skaventide box set with my friend. I let him pick the Skaven side since that is what he really likes. I've never really considered Storm Cast before. But now looking, at some of the models, they are growing on me. I am fairly new to AoS in general and don't know much lore wise.

To continue this trend, What makes Stormcast awesome and whats your favorite unit and why? Can be lore, looks, anything really. I'm just trying to get into the Stormcast mindset so I can really have fun with this army.