Sarla Anil Modi is a relatively new college started in 2010, it has good placements, great campus and infrastructure and offers full time BSc and MSc Economics courses with electives majoring in Economics, Finance and Business Management. 

SSE was started in 2002 and has a certain level of reputation. Other than great campus and infrastructure, the department is better established. It offers both BSc and MSc in Economics with specialisation in International Trade, Development Studies and Urban Development. Placements are relatively same if not better than at Sarla Anil Modi, as the same type of companies visit both campuses offering relatively equal packages.

My take: SSE is better than Sarla Anil Modi if you count reputation and experience.