I think its high time we listened to each song as its performed on the day, and then decide if we like it or not. What I mean to say is, even if Nihira is the best trained, or Vineet is your favourite...listen to how they sound on each show, and rate them on the basis of how they sound to you..not on how difficult their song is, or how many key changes they had in the song!
I liked Nihira's song HKHR NOT because it was difficult to sing, but because she made me want to dance when i heard it, because SHE enjoyed the song while singing it. I liked Himani's "Rab hai baghban" song because I felt myself moved to tears when i heard it.
Music HAS to touch the heart and soul. Even Lata Mangeshkar, with the greatest of voices, didn't always shine on each and every song..the ones that touched HER soul, are the ones that reached out to her listeners as well.
Sorry if I rambled a bit much!