The point, of a concert on DVD or Blu-ray, being to watch it?
Look, in one corner we have your DVD, which is pretty good and will suit you just fine, but over here in this corner, we have your Blu-ray, which looks so fucking amazing that it will fry your eyeballs while they're sitting in their little sockets to a melted globby mess.
What's it going to be? Pretty good . . . or melted balls?
Jokes aside, the sound is superior as well. After experiencing a concert on Blu-ray it's really a no-brainer.