I've been a huge fan of akai SKY, but their craft in this genre only improves with Heart, Attack! Most JRock bands in North America try to emulate JRock bands in Japan, but akai SKY has evolved into a sound all their own. "In Black" in particular is a standout track for this band, and I highly recommend listening to it in order to get a sense of why they're making a name for themselves. I'm eagerly looking forward to seeing what they bring to the table in their next release.
Favorite track: In Black.