I wasn't involved in the Beta.
What I do is I wait until a book is released and then search the web for reviews of the book. When a book becomes available to download, I take a look at the download preview to get an idea of what is in the book. If a combination of reviews and a look at the download preview spark my interest I then go to Amazon and buy, since Amazon tends to cost less.
What have I bought?
Deathwatch, Rites of Battle, Ark of Lost Souls, Rogue Trader, Battlefleet Koronus, Dark Heresy, Dark Heresy Ascension and Black Crusade. Some or all of these I'm thinking of trading back to Amazon, which will get me a discount on purchasing something new.
Will I buy Dark Heresy 2nd Edition?
Games Workshop has done a good job of losing my interest. Mostly due to the high cost of models and partly due to there obsession with limited releases that I always seem to miss out on. But that doesn't mean I can't get stuck into the RPG side of things. There's loads of alternatives to high priced GW minis out there. Even some reasonable "count as Space Marines" that I spotted recently.
I had a strong story idea which spanned Dark Heresy, Rogue Trader and Black Crusade. It seems a shame to throw that all away, but then I could always rewrite some of the ideas into something new, fresh and exciting. So while I sit on the fence as to whether or not I say yes or no to buying this, the question remains:
Is DH 2nd Edition better or worse than the Star Wars RPG's?
I might have to get both books and then compare.