I have a '13 770 MSL that I spec'ed very similar to the Rally Edition (finished the bike a week before the Rally Edition was announced ;-)): wider bar, shorter stem, DH rims and a 160 mm fork.
I'm really happy with the bike, even though it's total overkill on the local trails. I've raced a couple of enduros on it, plus two weeks of shuttling in the Alps, and so far it's been confidence inspiring to the point I need to really improve my skills. Even though it's not super light (13.5 kg according to my cheap scales) and a big bike (I came straight from 26" wheels...) it is nimble enough to blast through really tight or technical sections of trail, yet stable enough for the high speed work and G-outs. Above all it's been a great allrounder, to be honest.
The CTD Remote shock is not really my cup of tea, so I'm getting a Float X (without remote) to replace it. The rear end creaked a bit when new, and the plastic ferrule for the downtube internal cable routing is cracked, but otherwise the bike has been great.