I do not know about best but there are many for example

Sandor: http://www.sandorproteomics.co.in/pro-nextgen-sequencing.html

Osimum Biosolutions: http://lims.ocimumbio.com/next-gen-sequencing

As a service provider in Korea, ChunLab can suggest you for trial service of 2 samples with bacterial pyrosequencing. Contact ChunLab (http://www.chunlab.com).

Thanks to all

Dear Arvind,

If you're open to having your sequencing service rendered from outside India, please check out our platform where you can access several core facilities offering this service. 

https://www.scienceexchange.com/services/illumina-ngs

Best,

Atif

Thanks to all