Both the courses are good but student should choose the one as per his/her interest and potential. As B.Com is a degree program which is designed to enhance the ability to learn as the students study variety of subjects: Accountancy, Business Administration, Finance, Economics and Industrial Policies whereas BBA is a professional course as students get practical experience, read assigned materials, attend seminars, and prepare an internship report if they pursue this course. Lastly, I would say if you are interested in teaching profession then better to go for M.Comm after B.Com and in case you want to go for management field or MBA then BBA would be good as this will be making your basics clear so basically its up to you like what do you want to be in futture and accordingly you can decide the course.

Good Luck!!!