Jeez, the more I think about that digital deluxe edition, the less I want it. A few one-shot items that will mean nothing in the long run. A companion that does nothing except follow you around. An instant banker for...five days?! A piece of jewellery with low stat boosts that will no doubt be superfluous when you acquire some gear. And an elite that may (or may not) be useless compared to your other elites. And no soundtrack FFS!
Of course, being "digital" only also means that wherever you can buy it - Steam, Gamersgate etc - it will be staggeringly expensive for weeks and weeks after release.
I can't believe I'm saying this but I think I'll go for the bog-standard edition. Preferably retail from an e-tailer.