Edit: pu'er, black, green, white tea. Love it all and drink it more than I drink coffee. No need to start a culture war; taste is as individual as humour.
As a caffeine addict, I prefer black tea because it has a shitload of caffeine in it, but makes me less jittery than coffee. However, coffee just tastes better. So I just drink both, consecutively.
I tried switching to black tea a couple of years ago because I realized that coffee was making my anxiety worse, but fucking hell did tea give me the jitters. I think I just have a bad reaction to tannins in general and apparently black tea is super high in them.
Yeah it makes my teeth chatter, it's very strange. I didn't noticed a big difference between full vs. empty stomach but I wasn't paying much attention to that either.
I will say that most types of tea do this to me, to varying degrees. Black teas are the worst, green tea isn't nearly as bad. I've had some Chinese white teas and I barely noticed any jitteriness, but those teas really aren't very strong to begin with.
Yeah! I think I mentioned it in another comment in this thread, but a friend of mine has recently gotten really into Gong Fu style tea and I've tried several white teas with him, and they didn't give me that jittery feeling at all.