DiMarzio offers the blaze, the tone zone 7 and the evolution 7.
The blaze is "modern sounding" as it gives the mids a bit of a scoop, but its a bit fuzzy. The tone zone is what I think Korn uses... supposed to be pretty good overall... The evolution was developed by Vai, and carries over a lot of overtones... it's good, but, maybe not for everyone?
Seymour Duncan makes the JB-7, the Invader-7, The Distortion-7, the Jazz-7, and the 59-7.
The JB is fucking awesome. Smokin' passive, good output... Megadeth uses `em, as well as... well, almost everybody has used one at sometime... the 7 is obviously their 7 string variety. The invader is "built for metal", but, I think its too dark and fuzzy... I'd pass. The distortion isnt bad, but not as clear or packing as much "bite" as the JB. The jazz and 59 are much better suited for the neck. The jazz is clearer, the 59 is more "bluesy"... I prefer the Jazz.
EMG makes the 81-7 and the 707. I used to like EMG's... but, now, I really dont. They're ok, but, I'd look elsewhere.
Carvin's 7 string pups are good as well, and I hear good things about Lundgren, since you're already in Denmark... maybe the availability is better there?
Good luck with the guitar, they're not bad.