in my Bio there's part of a blind guardian's song, Im more with the most extreme part of the genre basically death metal (love technical and prog death), old thrash metal, also I enjoy a lot NWOBHM, and black metal, my first metal bands are the nerdy ones so they have room in my heart I'll never stop listening old rhapsody and luca turilli's, stratovarius, that kind of thing, I'm no a fan of doom stuff, but I love Ahab.
recomended bands:
Theory in Practice: first two albums
gorguts: obscura
Death: human, individual thought patterns, symbolic, sound of perseverance
Pavor: furioso (technical as hell, sick bass player)
pan.thy.monium: pretty weird stuff, interesting to hear
edge of sanity: crimson
tank: war drags ever on (heavy metal)
sadus: first three albums (pretty fast and sick thrash metal)
Ahab
first kataklysm works (sick vocals)
Summoning
Ulver first albums
aghora: first album
cynic: focus
the list could be longer...
if you like new stuff:
beyond creation (progressive death metal, forest lapointe is kinda god of bass players)
and augury same as beyond creation...
and I really like this wardruna it's a norse folk music project it's not metal, but there are some members from a black metal band and it's awesome