I say the Wolf Rider unit. The extra 'drop' is a very big deal, for one. Second, under 8th edition, I just don't see the practical use of a lone hero on a Wolf. A unit of Hobgoblin wolf riders are slightly more points, but have more wounds and more bow shots. Don't get me wrong...I think lone characters can be effective but they need a little punch & defense (a goblin big boss on gigantic spider, 3 wounds, 2+ armour save, 6 S4 attacks, poison attacks, stomp has a lot of uses). A 2 Wound Khan with a 4+ armour save just dies.
I've fought against Chaos Dwarf armies with multiple Khans on Wolves and merely ignore them (shrug) and if they got in my way killed them (shrug).
I would say 1200 points is not a very typical game though, it is particularly small and you almost have to reconsider tactics entirely
Indeed yes but this is maximizing upp to 2400p and nothing special. Just saying it’s in a lot of cases easier to fit some rare hobos. We have very expensive lords and heroes.
Test Chaos Dwarfs
Daemonsmith Sorcerer: Level 2 Wizard; Lore of Metal; Chalice of Blood and Darkness 180
Infernal Castellan: Battle Standard; great weapon; The Mask of the Furnace 200
Bull Centaur Taur'ruk: Blackshard armour; great weapon; Dragonhelm; Dawnstone 220
Personally I find the Rare section of a Chaos Dwarfs army to be the most competitive in terms of unit selection (being taken up a combination of Hellcannons and Destroyers). My games are played at 3000 points and as such I can't imagine approaching the 750 points allotment of heroes. On the other hand, the rare section is a completely different beast as two hellcannons and a Destroyer weigh in at a whopping 745 points!
In the case of dual Destroyers, there would be enough points for some wolf riders, but as I've said, I can't imagine exceeding the hero section point allotment, but I always find that I run out of rare points (dual Destroyers + a Hellcannon would be nice!).