The best option would be a compare and contrast essay.
A comparison and contrast essay would be the best option to discuss two different aspects of something. In this kind of essay, it is possible to organize the information by using a block or point-by-point structure.
Block structure
- Item A (positive and negative aspects).
- Item B (positive and negative aspects).
Point-by-point structure
- Positive aspects (item A and B).
- Negative aspects (item A and B).