To Potential Warhammer 40K RPG-Participaters Thread - Just Some Subordinary Gamers

There is an absolute mountain of content with the RPG pack Skeybar got us. Enough to make a life-long heavy traditional gamer (who has all of the rulebooks for his massive collection memorized) such as myself cringe at the novels of rules an stats.
In order to prevent a mental rule overload (and to reduce the amount of time needed on reading manuals, particularly for time-strapped folk like Matt and Kirby), I say we figure out which RPG story/book/theme we want to do first. Our 5 options are as follows:

Dark Heresy - We're Imperial Inquisitors doing... inquisitive things. We're all (mostly) normal humans, though if I recall right one of the supplements lets us be Grey Knights. I suspect a lot of deduction and claims of HERESY.

Black Crusade - We're servants of Chaos, either normal scheming humans and/or powerful Chaos Space Marines. All sort of options of EVIL. I expect scheming and lots of EVIL combat and non-combat actions. Probably a more rounded experience.

Deathwatch - We're Space Marines in the Deathwatch, a Black Ops unit composed of Marines from many chapters, up against all sorts of baddies like Tyranids, Orkz, and even some Warp shenanigans. Probably mostly combat, but in a tactical way.

Only War - We're Guardsmen; the fodder of the Imperium. Front line soldiers willing to fight and die for the Space Marines to take credit. We will probably die a lot, due to the fact we are all Guardsmen. I expect a lot of combat.

Rogue Trader - We're a group of independent explorers, entrepreneurs, and probably pirates who explore the WH40K galaxy in search of fame and riches. Probably the most well-rounded of the bunch.

So which one(s) are you guys most looking towards? If we decide now, we can focus on one series of books instead of the up-tine billion pages of data thrown at us initially in the pack. I've included a poll to help figure this out better. I'm not sure how it works, so feel free to say what ya want in the replies.

For the record I personally like the ideas of Deathwatch and Black Crusade best out of the bunch, though all 5 look like fun and I'll leap at the chance to do any of them.