I have had a chance to read over the unit descriptions a few times, and I have compiled my thoughts on the matter.
This is your bread and butter for the HQ section. The chaos lord can take more or less every option and you can build him to fill whatever roll you need him to fulfill. Put him on a juggernaut or in a landraider, but get him into combat because he is going to wreck faces.
This guy suffers from lack of options. In both the classic chaos marine book and the daemons book there were a bunch of ways to run your daemon princes, but with this book there are only a couple of ways.
Herald of Khorne
This guy also suffers from some lack of options. "What do you mean I can't give him an axe of Khorne?" This guys is best compared to the Dark Apostle; you take a herald when you want to buff a large squad. Put him on a juggernaut in a squad of hounds, or run him on foot in a squad of cultists/bloodletters. Cultists also gain the extra benefit of gaining fearless. Mostly a non-competitive option.
This guy got a boost because his six inch locus will now affect chaos marines in addition to daemons. In general I don't like chariots because I feel they are too fragile, but running one of these next to a few maulerfiends could be sick. If you are taking one of these then you are going to be building a list around it; make sure to have enough vehicles where this guy isn't a priority target.
Bloodthirster of Unfettered Fury
The classic bloodthirster. Nothing new here. No really. There are no options.
Bloodthirster of Insensate Rage
Once again, no options. This guy has the potential to wreck faces, but going last means he is going to be taking quite a few hits.
Wrath of Khorne Bloodthirster
I am very interested to see what people do with this guy. He has two shooting attack and a vector strike, so I would expect to see people flying around and causing havoc. D3 S7 AP2 shots could also prove useful against fliers. Of the three bloodthirsters this is the one I would expect to see most often.
I would take a minimum squad in a rhino with a melta gun and combi-melta. You are going to need all the anti-tank you can get your hands on, and chances are this is not going to be a priority target for your opponent.
Bring an instrument and deep strike these guys to make sure that your your bigger daemon units (hey there soulgrinders) come in when they need to. Also the minimum squad size is now eight, so you can take a squad with a terminator lord in a landraider.
In an army that is geared to kill infantry these guys don't really stand out. They still suffer from all of the same issues: no assault transport and no options for power weapons or power fists. There are just so many better units.
The main formation requires one of these squads. I still don't know how to make them work, but the best I have done so far is having them on foot. Fleet increases their chances of making it places. In good news these guys now have both a mark of khorne and are considered a daemon of khorne, so they will get four S6 attacks on the charge in addition to their funky rules. I want to like these guys. If anyone knows an effective way to use them please share.
I have had a recent love affair with terminators. This book continues what I know as these guys are the main (only) way to get a landraider. Other options include the classic meltacide. Either way keep it cheap.
Lots of people hate bloodcrushers, they get insta-killed fairly easily, but in an army of many fast and tough options these guys may go unnoticed. Run them alongside maulerfiends, landraiders, flesh hounds, and bikers. Bring a banner, deep strike your friends nearby, profit.
I miss my Nurgle spawn. Take these guys for their speed, but know that at T5 they are going to be quite a bit squishier than what you are used to.
A great way to get a couple of melta guns (and melta bombs) up close. You need some anti-tank. This is a good option.
Great option. Nothing different than before, but doubly good in an army of fast units.
Who doesn't love deep striking melta guns? If there are other options, then I am not aware of it, because deep striking melta is the way to go.
These guys got the same buff that the possessed got. Mark of khorne and daemon of khorne are a pretty sick combination on a squad full of lightning claws. The daemon of khorne buff also means that they will land on target from daemonic icons. Maybe someone can finally make use of the warpflame strike.
Once again, there isn't anything special here. There are a lot of options for killing infantry. Do you need another?
Those of you familiar with the blog know that I love landraiders. It is the only assault transport in an assault army. Unfortunately it is difficult to get as part of the army's formations. More than likely it will be in as a dedicated transport for terminators.
I run a defiler every once and a while, but never in competitive situations. In this army I would probably never run one because...
The cheaper more durable version of a defiler. Honestly there is no reason to take a defiler over one of these guys.
These guys can put out an impressive amount of firepower, but usually require some kind of twin linking in order to be effective. If you are allying in a sorcerer or herald of Tzeentch keep this guy in mind for prescience.
These guys will open up vehicles, and will get there on turn two. I would love to try out an army that ran three of these along with all the other fast elements. A good choice for this army.
I love helbrutes. I may be alone in this; the rest of the internet does not agree. This is the cheapest way to get lascannons (much less twin linked ones) into your army. As I have stated many times, you are going to need to open up transports before your army charges. These guys are more than capable of doing so, plus they are no slouch in combat if they need to charge.
I haven't ran these guys before because I don't have the models and I was never that into Khorne. There are enough units that don't have assault grenades where one or two could be justified as support.
Lord of Skulls
He's big! He's mean! He's way too many points! I want to like this guy, but he is twice as many points as an imperial knight. If you really want a destroyer weapon in close combat take three Bloodthirsters of Insensate Rage.
Next time I will look at the formations. This is where Khorne Daemonkin really get their flavor.