Good recording audio CDs of Debabrata Biswas

[AMITNOIDA]

I am looking for good recorded audio CDs of Tagore songs sang by Debabrata Biswas. There are 4 CDs Box set from Hindustan Records. Want to know the Audio quality of these CDs. Other label CDs of Debabrata Biswas songs are from Saregama, Asha Audio etc. Any pointer towards good audio quality Tagore songs of Debabrata Biswas.

Suggestion of the members having Tagore songs CDs of Debabrata Biswas are solicited.