- If you want a vanilla-like video - use rock/metal, as it was a popular genre among the players who enjoyed PvP back in 2005.
- If you want people to actually enjoy your video, use the genres that have replaced those in the past 10 years. Go to warcraftmovies and look at the most recent pvp videos that are out. Most involve trap, dnb, dubstep and other electronic genres.
- Advice from author of a movie, which received 3x Platinum, #3 Most viewed and #2 voted most skilled awards.
The other movies (which I think were probably even better), didn't receive anything close to that amount of attention, mostly due to the fact that I used music that I enjoyed (heavy rock & grunge metal).
So pick your poison.