Which Destroyer 666 album to get first?

you should get Unchain the Wolves, Terror Abraxas and Phoenix Rising first. All 3.

edit: However, as demilich says below, phoenix rising is my favourite.
 
Phoenix Rising is the best place to start, and then spend time with it. The album takes a while to *really* absorb... at face value, it sounds like bog-standard death metal, but in truth it's much more than that.
 
Yeah. Phoenix Rising is the easiest to digest, and the more you listen, the better it gets. From there, Terror, then unchain, then cold steel, etc.
 
Good choices. On a vaguely related note, I still need to replace my copy of "Unchain the Wolves" as my previous roommate took off with it and several other of my cds (bloody retaliation is forthcoming). Anyone know a good place to order this (I live in the US) for a reasonable price?