His music is rather heavy and crazy (when I heard him anyways), I though it sounded a bit like a Japanese Derango, since it has some of the same bass-dynamics as them and the with "Japanese music" on top, for me the sound was pretty unique. I hope I will get the chance to re-hear some of that stuff again some day?!
for underestimated artists I still can't help of thinking of:
Trold
They have the whole package: massive drive, twisting melodies and brilliant composition!