RE: Competition music
I'd agree with the dramatic build up...
I also think, unless you're a gymnast, extremely good poser, or dancer, fast music can be a problem for women as they rush through a routine messily...
Hence, my personal preference is for music that's quite slow but as outlined above, builds to a climax.
It depends what suits you, and hat you feel comfortable with.
I really like Christina Aguilera, Pink and rock music with a bit of oomph to pose to.