Oh such a coincidence!! I made a post in a more or less similar vein almost at the same time as you!! Same pinch!! haha great minds think alike (prefer not to think of the corollary to the proverb, i.e. fools seldom differ hehehehe).
My post is as follows:
What a fantastic singer alisher has turned out to be!
What I like is the madness in his sufi numbers, one can see that he is totally in it, totally in sync with the mood of the song whatsoever be the song selected.
This total involvement and oneness with the song and the sheer madness and abandon that he brings into the song make him truly different from the others this season, except for kamal to a certain extent.
Sugandha does look completely involved in her song but sans the hatke and the madness aspect.
As for the others i.e. abhilasha, bishak and ranjeet and also sniti, I feel that they just concentrate on gayiki and that's about it most of the times. So somehow the soul kind of gets lost and the mesmerising effect goes missing. sniti's only weapon in this respect and a strong one at that is her voice, her different haunting voice but that too works only for certain songs. But I feel that these singers are too conscious about doing their work properly and end up doing more or less justice to their renditions but the other higher dimension is sorely absent, that dimension which comes in when you rise far beyond being conscious that you are there to deliver and do a good job of it and in my opinion this is what alisher does!!
Sorry for the rambling guys, just felt like sharing my viewpoint.
Thanks for the patience
Padma