Definitely Orijen - we had disastrous results on Nature's Variety because they use citric acid as a preservative.... nasty stuff!
I've been feeding it for a long time now with no problems, so it's not nasty stuff for all dogs.
Oh as for the rabbit formula in NV it contains chicken fat, which causes bloat in larger breeds.
They've all done fine with both citric acid and chicken fat for years. I'm not about to start worrying now.