I'm not sure how much caffeine I'm actually taking in, but at least it's not in the nast chemical form of Diet Coke. still, I'm consuming mass quantities of green tea (about 4 bags a day - hot water brewed, then iced.
I'm finding that green tea doesn't put me into the same peaks and troughs I once had. I just have more of an even energy level and feel a lot better than I used to.
maybe it's just that I'm getting a lot of restful sleep, too. Perhaps the caffeine intake and the sleep are intertwined.
Whatever the case, I'll look up that brand you mentioned Tim.