Which college is better for doing B.Com Hons. in Delhi university: Gargi or Shaheed Bhagat Singh?

As far as the course B.Com (Hons.) is concerned, both the colleges, Gargi or SBSC are good in their own ways. 

The Faculty of both the colleges are well experienced and cooperative. The only difference is that Gargi is an all girls college unlike the other. 

If you want to choose between them, it is preferable you go for Gargi. Being a girl's college the experience you will be getting there will be quite different, considering the ambience. 

SBCS is also good but Gargi has better placements, as many top companies take part in their placement program. Gargi also has a better position in DU in terms of Drama, Debate, cultural programs, extra-curriculars, etc.

Therefore if you want more exposure from the college both in academics and extracurriculars, then Gargi would be a better choice.