....okay, I give a band of each kind I can think of, don't know what you're looking for.
Agathodaimon - well-produced melodic black metal (with better guitar than most)
Compos Mentis - melodic death, its good, but if you don't want more melodeath don't bother with it
Death Angel - thrash (if you havn't listened to them yet)
Eighteen Visions - metalcore
Hin Onde - viking metal, really cool, but the production isn't amazing (not bad though, worth it)
Invocator - newer thrash, really cool
Kopecky - instrumental progressive rock
Niacin - really cool progress rock
Prototype - progressive thrash
The Project Hate MCMXCIX - atmospheric death metal with great female vocals
The Cancer Conspiracy - really good jazzy instrumental metal
Tuatha de Danann - upbeat celtic power metal