During my earlier dabbling in Warhammer when I was a wee nipper, I had warbands of Undead, Chaos Warriors and Empire. These days it's definitely Vampire Counts, followed by Lizardmen, then Dark Elves, then possibly Skaven (on account of the figures in Island of Blood being so awesome + the doomwheel is hilarious). Lizardmen and Dark Elves are constantly scrapping for second place in my favour but Lizardmen generally have the edge. I already have a battalion (only have a repeater bolt thrower for DE) plus the larger scale models for Lizzies are AWESOME whereas with the exception of the Hydra, I'm really not that fussed about DE larger models. The Cauldron of Blood/Medusae kit can stay on the shelf thanks.