First of all, Gackt isn't a "band". He's a solo artist, who left a "band", by the name of Malice Mizer. Kickass? I don't think he is anymore. I preferred him in his MM days.
As for DLQ, I'm split. I used to really adore their music, until I really dove into visual kei. To be honest, they're not that great. While they will get much praise, they're really all about the looks. And compared to some of the other bands in the industry, they're nothing special.
Finally, it irritates me to no end to hear someone call someone else an "otaku". It's an insult, and is used in horrible situations. But, I'll "ignore" the "ignorance", and realize you're blindly using the term, guessing it means a person who is interested in Japanese culture, etc. Gah?
*pissy*