I'd say Nadia (or Lina, who ISN'T HERE :fiery: ), but both have pretty nasty injuries right now. Daniela's shown she can hang with the best; she'll be top 20 by Wimbledon, and hopefully she can take it from there.
This year is definately going to be a good year for Daniela Hantuchova. She is getting better every match and I think could be a big threat to the top players before the year is over. Many of the top girls have had to go to three sets to beat her.