I think the vocals on Blooddrunk are really good, he still has that scream, which I like, and there's some almost growling bits, which sound really cool.
My favorite vocals are on FTR, a bit deeper than Hatebreeder vocals, but still have that high pitch.
Jari isn't exactly good...Mikael Stanne shits all over him, Peter Tägtgren shits all over him, Johan Hegg shits all over him, shagrath shits all over him, John Tardy shits all over him...and thats just naming a few.
Just for the record, I have nothing against Jari...