Crap, it's been a while since I've gone out and searched for one (especially since they're less common in California), but there was a bar in Seattle called Die Bierstube that had some fantastic German witbiers.
I'm trying to remember ones I've liked. Franziskaner Weissbier Hefeweizen, Ayinger Hefeweizen, Allagash White, Lagunitas A Little Sumpin Sumpin. I know there are others, but I'm blanking since I usually go for Belgians, Porters, Stouts, Sours, Goses, IPAs, and Barleywines.
My stomach isn't a fan of the beer right now either. I wonder if there were traces of a cleaning agent left or something and that's the bitter taste.