Comparing IB Products/Services (M&A, ECM, DCM)

How do different products differ generally across the industry? I get that a lot is firm or team specific, but what are some general differences in ECM, DCM, M&A, restructuring groups, etc. in terms of culture, exit opps, time spent modeling/pitching/PowerPoint, etc. What are the pros and cons of each one? I feel like M&A IB is covered well on this forum but not the others.