At the moment, my ears can't get enough of Radwimps, Coldplay, HaKU, Ling Tosite Sigure and Radwimps. Yeah, specially Radwimps. I might download their entire discography. Actually, I am doing it right now.
As for Coldplay, I love "Ink" so much because of the rhythm and bass although the lyrics is kinda sad. I'm also addicted to HaKU specially the one on my profile.
Ling Tosite Sigure has a nice soft vocal quality like in "Unravel" and their sound is rad. They have a bit of similarity with HaKU on the vocals but I think that's how japs generally sound. Their bassist, Miyoko and HaKU's Haruna are both badass.
Special mentions: Flip, Chatmonchy, Heavenstamp, Hag