Nico has been on NB venison since he could eat food. I have been trying to switch him off of it since he came home because a) I go through so much since he's so active and it's a fairly low calorie food b) I'm not impressed with the fact that it has such a low meat content c) even with my discount ( I get 30% off NB products at work) I don't think it's a good value and d) so many recalls.
Until recently, I haven't been able to find anything that works for him without giving him the runs even after a very gradual switch. Until I found Nutrisource Grain Free. It has a higher fiber content than most grain free foods ( or heck most grain inclusive, at least the variety I got) and it has added pre/probiotics. So far he's doing really well on it. The regular grain free isn't LID, but I'm pretty sure the Pure Vita line is. It's a pretty decently priced food (I'm paying 45 bucks for the 30 pound bag) and the feeding guidelines are less than the NB, so I'm also getting more use out of a similar amount of food. (The biggest the NB comes in is a 28 pound bag for some of the varities.)
Saga will be getting switched to either the Seafood Select or the lamb version when her current bag of food runs out.