Bela has a very melodious and sweet voice. One of my all time favorites is Manamohana from Jodha Akbar which is truly divine. Thanks to rediff for sharing this video.
sounds to me just an average singer. Sweetness and sur , melody is lacking. A singer should have that something special. Sunidhi to me does not sound good when she sings slow songs but she definitely shines when she sings the fast songs , the type Ashaji used to sing. Shreya Ghosal amongst the new singers is really good but she cannot sing the fast numbers the way Sunidhi does.