What Do you think, a mix of waterfall and Agile Project Management gives better result?

Combining the two allows an organisation's teams the flexibility to use the best method according to the context, and so exploit the merits of both agile and waterfall.This means that rapid development, flexibility, and fluidity through iteration and adaptability can be achieved based on agile; and programmers will appreciate the importance of planning in advance, and meticulous documentation in project management success, due to the sequential and non-reversible nature of the process - any errors would be highly costly. So, yes, it can give better results.