The Black Knights are still a viable option in the army book, and the existing models have been pictured in the colour section.
The blood knights are awesome (strength 7 on the charge !!!), and beautiful sculpts too. However, at 55points per mini they are a very expensive, if powerful option, so I wouldn\'t rule out Black knights just yet.
The new ghouls are loveley, and the plastic kits rock!!! They have lost the ability to skirmish, but have held on to their 2 poisoned attacks, and are the same points cost as a skeleton. The new plastic kits make them a much more financially hiable option than the older models.
And the Corpse cart IS fantastic fun to work on!