I know that Erik probably won't like some of the most brutal stuff on this comp, but it's worth a try. Besides, I've tried picking the absolutely best of my favourite DM songs, featuring the coolest riffs, so we might be in for a surprise or two.
My predictions:
Erik will probably like Deeds Of Flesh (very epic track), Autopsy, Monstrosity (groovy, several cool solos, fast n' thrashy), Vader (ditto), Dies Irae, Defleshed (rather old-skool Swedish DM), Malevolent Creation, Aeternus, Morbid Angel, Incantation, Obituary, Suffocation, Immolation, Vomitory.
The Dying Fetus track is pretty old, and not very similar to their recent stuff. 'tis mid-paced, bone-crushing and groovy, so he MAY like it. There are also some quite technical and experimental stuff on there, and he may like some of that. He probably won't like stuff like Brodequin and Liturgy, but it's worth a try nonetheless.
The Prostitute Disfigurement song has got one of the coolest riffs in the history of music (as well as an ass-kicking solo-part), and it's also quite melodic and thrashy here and there. I hope that the sheer brutality and the guttural vocals won't be difficult for him to handle. There are very few tracks on this compilation that are "beautiful" or anything to that extent, but every single song has got KILLER RIFFS - that's what DM is about, in my opinion.
Edit: Blood Red Throne absolutely DESTROY. Awesome, riffgasmic band - shut up all haters!