The ones I remember watching that I really loved, in this order:
1) Shampa (She was brilliant, she had great concepts. Some of her choreographies with SSR are my ever favorites of Jhalak.)
2) Punit (My bias may make me gush more than necessary, but 'Pehli Baar' is probably my favorite JDJ performance EVER from all the seasons I've watched. It was something else, I still watch it time to time, and I still feel moist-eyed. He was brilliant, but he's a great choreographer nonetheless, if you watch another current show where he's mentoring, his concepts are amazing!)
3) Tushar (I feel that he's always got pretty strong contestants to work with though. I would have loved to see him this season.)
4) Savio (Someone who can make 'Pehla Nasha' look so amazing with a pop singer, I mean kuddos!)
I don't remember most of others to be honest. Though I haven't actually watched all seasons completely.
Not a Salman fan, I think he's a fabulous dancer, just like Jai is, but they're both so limited in their choreographies. It's the same rehashed monotony presented in a different way. A choreographer should make you say 'wow', now that was something!
I think the lack of good choreographers this season, and new ones entering, is simply because all the previous choreographers who were actually awesome have gone way above. Punit is mentoring in D+ and acting/stage shows, Shampa is doing movies. I suppose the other opportunities are way better. Good for them, I'm actually so happy to see them become big, even though I miss them on the forefront.