Chaos MC - It's possible to cram a pair of Daemon Princes, a Greater Daemon, three Dreadnoughts and three Defilers (basically big Dreadnoughts with a Battlecannon) into a list and pretend like your a 4th edition Nidzilla list...It looks scarier than it actually is but can be made viable with good deployment and a bit of skill.
Rhino Rush - If you have enough Multiple Small Units (MSU) moving forward with a good mix of Meltas and Flamers in those units then at least some of them might survive long enough to get stuck into the enemy. If you like Rhino's and don't mind having 20 Kill Points in a list then this might be worth considering.
Dual Lash - Daemon Princes or Sorcerors with Lash of Submission combined with Obliterators is a tried and tested Chaos Space Marine variant. It is somewhat less effective with the trend for mechanisation that 5th edition favours but it certainly is an option to consider if you like the idea of moving your enemy infantry into clumps and then dropping Plasma Cannon Blasts on them ;-)
The Chaos Marine codex is another of the ones that suffers from overall bad design. if you like the imagery of Chaos then few people would condemn you for picking a different codex altogether and attempting to crowbar some Chaos models into it in the form of 'Counts-As' units.
I think those three will do for today. Next time we'll have a look at what the Dark Eldar, Eldar and Grey Knights have to offer.
Thoughts and Comments are (as usual) most welcome.