So I just read Rai (first Valiant book ever) and LOVED it!!! I want to go back and read and collect some of the other Valiant series.

I am generally eying X-O Manowar, Harbinger, Unity, Bloodshot, Archer & Armstrong, Quantum & Woody, and Eternal Warrior.

Couple of questions about how to collect these books...would you go for the single issues or the deluxe hardcover books? Second, if you go for the single issues, do the pullbox editions contain supplemental materials the way the Rai pullbox edition did, or do they just have different covers?

Thanks!!