Bands that sound like Tool, APC, and Puscifer.?

I have exactly the same taste as you do. I like some of Opeth's songs too. Not the growling ones, but some are good. Coheed and Cambria are a good band, with strange singing, just like The Mars Volta. Have a look at Atomship. They're the best band you've never heard of. Seven Wiser are good too.