@Neferhet: i've been thinking a lot about taking marked csm instead of berserkers, but i'm not so sure. The thing that bothers me the most is the lost of fearless. One could solve that issue giving them an icon of vengeance, but:
- 10X csm, MoK, additional ccw (except on champion and the 2 flamer guys), 2x flamers, LC, IoV = 224
- 10X berserkers, LC = 215
The only way to make the csm actually cheaper would be to swap the bolters for a close combat weapon (instead of adding the ccw on top of bolt pistol and bolter). They would then come in at 210 (only 5 points cheaper). But in this case you lose effective mid range firepower and then felxibility.
So, after all, gearing out the csm squad to get close to a berserker equivalent turns out more expensive than the berserker themselves...
I think you are missing an important point: with berserker you don't have any choice to swap bolters for ccw. With marines you can decide to have a cc oriented unit or an all rounder unit with bolters and MoK (you just lose 1 attack on the charge), and giving them Veterans, you can have a good punch Vs Marines, plus Ld 9 /10
so you should go like this
10 Marines, MoK, 2 Flamers, VotLW, Lightning claw, ccw, Icon of wrath (215)
Exactly the same as Berserkers, but you have Hatred vs marines, 2 flamers and the icon, plus you don't need a khorne lord to be troop, and could decide to swap just some of the bolters to ccw's.
Nope, I'm sorry. Zerkers are just a not so performing. they are a specialist cc unit that perform just the same as regular khornate marines (same number of attacks, same strenght, same resistance), and this is just for the first charge round. next turn they perform like UNMARKED marines.
They lack punch, they lack options, they lack flexibility....
So, why should i prefer Berzerkers over, say, even Noise Marines?
(okay that's because I like to paint pink...)