First time viewer - which season should I watch next?

Season 20 - Seattle was my first time watching the show - I saw the clip of Adam playing the piano with all the men and got hooked. Expected a trash fire and got a trashfire, but also some pretty real emotions and fascinating character analysis!! Recommendations for the best seasons to go back to next? I'm aware that this season had new experts and maybe a different structure than previous ones. I'm open to a UK or Australia season but would probably love one based in a Southern US city most since that's where I'm from :)