I have watched both but over all I choose Vampire Kight cause at least in that they leave it off for a better ending but in Death note the ending is so cut dry it makes the whole anime seem like just a waste of time, but don't get me wrong Deathnote Rocks. I just have to go with Vampire Knight because the anime wasn't just cut off and still can continue with a little storyline creativity
tsha! I shall cut you with glowy thingie that sprouted outta my stick