Have you watched Li-Robson a few days ago? Very high quality.
Everytime I have to maxe an example, I love to quote Schiavone-Kuznetsova at AO 2011. Fabolous match, better than 90 % of men's matches of that year.
But as a WTA fan I must admit some matches are very lethal to the eyes. An out-of-shape Kvitova or Stosur or Radwanska are very bad for the image of the tour.
Yes, that was great play from Robson. She played against Kim quality too, I was watching all the match. But it`s like exception from rule. In ATP every second or third match is worth watching (more or less). In WTA - one of ten can be intresting, IMO. And if you want to chose the best WTA match from the last years it would be Madrid-07 final.
Schiavone-Kuznetsova at AO 2011 was cool too of course, but not even close.
And actually I like Agnieshka. She is my favourite current player in WTA.