Fortunately voices rarely impede my musical enjoyment. Blood Brothers, ISIS, Converge... all good.
As far as ISIS goes they friggin rock. The new album is a bit calculated with less emotion than Panapticon or Oceanic imo (havnt heard their older stuff yet). But still great.
Cant wait to see them live.
The previously mentioned Jesu and Pelican are also very good.
I think ISIS and Converge are tops in their respective genres.