I haven't been to a Rammstein concert, but I've always wanted to go. I've seen videos of their concerts, and they look amazing. I love their music, and I think it would be an incredible experience to see them live.
I've never seen a Row Zero, but I've heard that it's an amazing experience. You're right up close to the band, and you can really feel the energy of the performance. I would love to experience that one day.