The other biggest thing about Deamons of Chaos is the ability for conversions! Usage of many different companies models ( such as the Ultraforge more shown above ), and being able to scratch build models with minimal effort, but great effect.
For models, currently the collection consists of 20 bloodletters, 10 more beastmen converted to bloodletters from long ago, 20 plaguebearers converted from crypt ghouls and zombies. On top of these, I have converted/sculpted 20 Horrors ( fairly simple but good enough for gaming ), and 6 flamers made from left over bits. Plus other units of not so much note.
For characters I have several. Ranging from 3 Heralds of Tzeentch on discs ( converted from crypt ghouls ), 1 Herald of Tzeentch on Chariot ( converted from Corpse Cart ), 1 Herald of Khorne, both on or off Juggernaut, and a sculpted Herald of Nurgle on Palaquin. For greater deamons, again I have plenty. Bloodthirsters, Great Unclean ones, and Keeper of Secrets/Lord of Change depending on the needs in the game.