I may not be a huge Metallica fan, but I did try out Guitar Hero: Metallica for my 360. Here's my review!
I admit, the DSi is taking the world by storm, though I'm still very hesitant to buy one. From what I've seen, the DSiWare hasn't really taken the huge step yet. While minigame collections and Brain Age exercises are cool, the DSiWare needs something bigger and better. As World of Goo and the Virtual Console proved for the Wii, accessibility can hide complexity. A World of Goo game on the go would be amazing, especially with the stylus. Also, we're still clammering for a DS Virtual Console, though I'm wondering if Nintendo is even considering it.
Also, the multimedia seems to be pretty low-key. Experimenting with pictures has been a major selling point, but the music format is pretty limiting and there just hasn't been an amazing integration of the DSi's major abilities. We'll keep hoping that Nintendo is planning some cool new additions to the DSi.
The DSi is not appealing to me, at least not yet. These obscure additions don't feel fleshed out and seem to suffer from the limitations of the system. I'm not convinced that the DSi will surpass the original DS and DS Lite, but really, I'm not the deciding factor. Everyone is.