Rumba - I would have preferred to see Kelvin's tango without the mistake
Quickstep - I would have preferred to see Emma's QS without the mistake
Viennese - I would have preferred to see Karim's Viennese without the mistakes or his samba without panda costume 
The judges appear to have just gone for 3 high scoring dances and agreed, not even the earliest ones. I thought the latest dance they would choose would be musicals week, Emma's charleston does seem too recent although Stacey's paso was also much later on and I thought she reprised that in the final?
Not keen on any of the showdance music at all although I can see why they have gone for them. Shout is catchy, Kelvin can reprise some jive and isley brothers his groove, Irving Berlin is up Tony's alley and Emma is going for musical theatre showstopper, Greatest Showman number Karim can do his pirouetting to his heart's content...but all three are going to leave me cold
I would be surprised if Kelvin does not reprise his samba, Emma her viennese (although someone here mentioned quickstep, was that confirmed? if so, kudos to her for picking one she wanted to show she could do right as it was a complete balls up on the night), and Kelvin his tango (except iirc he wasn't keen on that dance)