Best for me were Gilles/Peta, by far. Sabrina/Louis were good buy not nearly as good as Gilles or Apolo. I hope the judges favoritism works against her before the season is over.
Worst for me were Bristol and Joey, thouigh Joey was much, much better.
Melissa is an ok dancer, not a great one by any means. Talent is good enough that she should not go home this early, but I'd never vote for her because I can't stand her.
As for Shawn and her bad knees, what she's doing with Derek is far from what's required to do double and triple somersaults with twists and then stick the landing. It's like comparing basic arithmetic to advanced calculus.