Need help to valuate these pharma stocks..

Hi All,
I am planning to invest in the below shares in pharma sector. But little bit confused after studying each stocks. Can anyone help me to understand which will be a good bet in long term?
I am looking forward for a time frame of 2 to 3 years.
-Granules india
-Suven life science
-Camlin fine
-Marksans pharms
NB: I am presently holding only Jubilant life sciences & JB chem. from pharma sector.
If anyone has any other Pharma shares which you would like discuss or looks like a good bet….

Need help to valuate these pharma stocks..