Man
Vocals were cool on this. Haha, you did a pretty good job. I can't critique sound quality, cause I'm at work and my speakers there, suck donkey balls. So it didn't make my ears bleed...therefor.. good. haha. Anyways, you have to look at whos listening to your songs to understand why they don't like the vocals. I don't know. I have been listening to metal longer than most NG'ers have been alive. Don't take it to heart... There were "produced" heavy metal bands that sounded much much worse than this. haha.
The only thing I can offer is...the lower gutterals were awesome. The medium growl sing, sounded a bit like constipation grunt. Which is a great start for a heavy sound..just get some more airflow on them...and they will be wicked.
Rock on, man...look forward to your next tune.\m/