For me, Princess Princess 11 was easily one of the best episodes in the series. Exploring the Sayaka sub-plot proved a winner with the kind of shoujo emotional plumbing that this series does so well. While family troubles may not exactly be very fresh in the list of teenage angsts, it was executed with a degree of realism, and relatively good animation (for this series), managing to showcase the strong bonds between the boys at the same time. More depth for the characters is always good. I've always felt that the comedy in this series isn't really its strongest suit; sure they may elicit a couple of chuckles, but the gags simply aren't as good as Haruhi or Ouran Host Club.