I thought Anita going out was the right choice, though she and Katie are quite a lot weaker than the rest. She's very athletic so was able to do all the tricksy lifts that Gleb put in, but I don't think she was a very musical dancer. I also didn't like Gleb's choreography at all. All contempowaft (love that phrase of Monkseal's) and lacking dance content.
Katie on the other hand does have a lot of musicality and when a dance suits her own style is a very elegant dancer. I prefer ballroom to latin on the whole, and within latin mostly like the slower dances - rumba and AT - and these are the ones that Katie has been able to make her own. That's personal taste, though - I'm just not that bothered about the jive and the charleston as dances.
I had a look at Sophie and Brendan's showdance again the other day, and remembered how good it was. Very Fred and Ginger in style - classic and elegant and musical - compared to (from the same year) Abbie and Aliaz's horrible disco-contempo overblown effort.
I also like Len's comments - you can tell the man really, really knows about ballroom/latin dancing. When people allow him to actually talk about the technique he's so perceptive.