The Most Violent Manga?

Which Manga (of the many) is the most violent in terms of gore and such? Personally I feel it's the great "Battle Royale" but I just want to see what else is out there.

As you can tell by my signature, I don't read or too many mega violent manga. However, I have to mention Berserk. A guy whose been through Hell, twice, attacking and killing demons in medieval times, because they raped his girlfriend and then scratched out his eye.

Gantz by far.

the most violent one i read is, haou airen, its pretty crazy

Battle Royale Is the first I've read and it's my favorite manga by far, even if it is a little twisted. I can't put it down. I've got to see who gets killed/sexed-up.

Battle Royale GMV.

In Battle Royale, when Yuko fell, I thought there was WAY to much blood. Anyway, I think Battle Royale is definately the most violent.