I agree with everyone about Rehan. although he's got a pleasant sounding voice, he is out of pitch,sur and taal. He needs lots and lots and lots of practice.
Secondly I can't believe that Bhavin was voted out although he can sing a variety of songs and he knows the high and low pitches and is aware of sur and taal. His last three performances were excellent.
Chang is very pleasant sounding and amazingly most of the time in sur, considering his anchestors are chinese, he sings well. Though I believe he still has a very strong accent at times.
Pooja on the the other hand I think is overrated. She sings with her nose most of the time, and like Richa I believe she too sounds like a child singing.
Especially if you listen to her sing "Ek Pyar Ka Nagma" you'll notice her childish voice.
Richa is 16 years old, however everybody in the show and the general public make excuses for her behavior claiming she is too young. I mean come on, she is not that young, most girls her age have quite mature personalities. She was acting like a little girl of 10 years old. Her behaviour with Prashant was uncalled for and rude (even for a child of 10 years old). Didn't her family teach her anything.
Looking at her change in personality in the last week that she was purposely putting on this childish innocent behavior to gain sympathy from the judges and the general public. Also I believe she has a childish voice, though a good singer, she needs to have a more mature sounding voice, as when she sings she sounds like shes got a cleft palete (toungue touching upwards always).
Ankita was good with only sunidhi type songs, but I believe she is too confident, and thinks she is too cool. she is also too much of a Tomboy.
I think the Indian general public like to hear nasal singers Like Sameer from Little Champs (Sa Re Ga Ma Pa), who I believe is not is sur most of the time, and has a rough voice. I believe Divaker gets much less credit then he deserves, as he is very aware of sur and taal and sings and sings wholeheartedly. I think that Divaker is much much better than Sameer.
Getting back to things, I believe out of the guys Emon, Bhavin, Parleen, Prashant, Amit (In that Order) are good singers.From the Girls I believe Deepali ,Charu and Vartika are very good singers (In that Order).
However an all rounder singer who can sing upbeat songs as well as slow mood songs is EMON. GO EMON. SECONDLY I would say DEEPALI.