The pros of self-study for UPSC prep include flexibility in scheduling, cost-effectiveness, and control over the learning pace. However, it can lead to isolation and a lack of structured guidance. On the other hand, coaching provides expert direction, regular assessments, and a competitive atmosphere. Yet, it can be expensive and may not cater to individual learning needs. Ultimately, the choice between self-study and coaching depends on the aspirant's learning style, discipline, and financial situation. Many find a hybrid approach combining both methods effective.