What kind of metal is best for bass? Seriously, though...about the vocals. Modern metal has two main types of vocals--Gollem (black metal) and Cookie Monster (death metal). This one has both. I guess that's cool.
For people who find this to be too much, I recommend Opeth. Very melodic, intricately arranged, and does that nice trick of switching up between instrumental and even (gasp) acoustic segments, and full-on metal fury.
About the playing--decently intricate, but seems to have a lot more going on in the right hand than necessary.