Oh, christ. Umm... what are you musical interests, broadly speaking?
E.g., do you prefer a fast or slow tempo? Do you like male or female vocals? Are you inclined to a certain type of singing - operatic, gutteral, clean, screaming, mixed, etc.? If you mainly listen to popular music, is a clean production important to you? Are you concerned about lyrical content?
The metal scene is quite vast: from the satanic Deicide to the christian death metal outfit Mortification, the operatic Blind Guardian to the violin-driven My Dying Bride. Manowar, for example, did an excellent cover of the Italian opera classic
Nessun Dorma. They also covered
An American Trilogy (ya know, the famous "glory, glory, hallelujah" chorus. Elvis did this song a lot, as well), not totally uncommon for a band whos previous work included a song called
Bridge of Death ("Satan, don't forsake me, I wait for you to take me, grant me wings, and as your messenger I'll fly").
There's just so much out there that I couldn't just recommend something I think is good at random. Hell, with christian death metal and even, umm, "love-metal" like Crematory, with lyrics such as:
"I would die if I couldn't feel your love
Couldn't feel your love
Couldn't feel your love
I hear you smile
Your voice in my dreams
When i wake day and night"
This post probably wasn't much help, but it hopefully gives you a better idea of what's really out there. Death metal has nothing to do with worshipping satan, and the gore-metal bands such as Cannibal Corpse are really few and far between.