[HOE] Book Recommendation?

[Broblawsky@aol.com]

I'm looking to get a new HoE book, but due to my relative inexperience in the 
setting and the fact that its damn near impossible for me to just flip 
through books at my local game-shop, I'd like a recommendation from you guys. 
I already have the main book, the Wasted West, The Junkman Cometh, Cyborgs, 
and Monsters, Muties, and Misfits. 

OK. So, which of the following should I get?

1) Children o' the Atom
2) Brainburners
3) Road Warriors
4) Spirit Warriors
5) Any other ideas?

In case you're wondering, I'm a player, not a Marshall, and I am currently 
playing a junker.