For a B.Com, Ramjas will be the best option among these. It has an excellent commerce faculty. It offers a great academic atmosphere. Ramjas has many active clubs and societies that you can join. 

Ramjas College placements are pretty good for B.Com. According to the recent placement drive, the highest and average salary packages offered to students are respectively, INR 19.5 LPA and INR 5 LPA, respectively. Students get recruited as Risk Advisories, Audit Assistants, etc. 

Among all three colleges, Khalsa College is better since it has good infrastructure and better faculties. It is also a co-ed college and the crowd at SGTB Khalsa College is much better than Daulat Ram College.

It’s always better to choose an institute near your home. You can save the time you will need to spend during travel otherwise. If distance isn’t an issue for you, you can choose Jesus and Mary College.