Hey,
The DCE Darbhanga is best for Computer Science Engineering. The infrastructure and faculty is good and you will get better opportunities here.
I am providing below the list of some of the best Computer Science Engineering colleges in Bihar:
1.Bakhtiyapur College of Engineering,Patna
2. Nalanda College of Engineering,Chandi
3.Central University of South Bihar,
4. National Institute of Technology,Patna
5. Indian Institute of Technology Patna
For detailed information follow the link given below:
Hope this helps.
Good luck.

In bihar college ranking be like that :

IIT patna>>> NIT patna > >>Bhagalpur engg. College >= BIT patna > Muzzafarpur institute of technology = Darbhanga engg. college

So i will recommend you to go for  Darbhanga engg. college.

Hope you got your answer.

Dear Gaurav,

In bihar college ranking be like that :

IIT patna>>> NIT patna > >>Bhagalpur engg. College >= BIT patna > Muzzafarpur institute of technology = Darbhanga engg. college

So i will recommend you to go for  Darbhanga engg. college.

Hope you got your answer.

Good luck :)