If you are particularly focusing on placements then I will suggest VVCE college in Mysore as it is having a very good placement percentage report. NIE Koorgalli is basically a growing college, so the placement is not so good. ATME college placement performance report is not much appreciable. You can also check about the placements of these colleges individually by going through some articles of Careers360 based on the same and I think after this you can drawn a conclusion about joining.

Thank you.