Sitting on the fence between freeze-dried and dehydrated myself. Harmony between budget and nutrition, eh? In my experience, it's all about the swings and roundabouts. Freeze-dried tends to cling onto those essential nutrients better, as said, but it does put a deeper hole in your wallet. On the other hand, dehydrated can be lighter on the pocket, but you might be surrendering some of that nutrition there.
One tactic I use is to mix the two, y'know. Basic staples like rice, beans, and grains I go for dehydrated - saves a bit of cash and they're