Arizona makes good tea, though in BIG portions. Still, it's good.
My personal favorites are:
Half Mango/half tea for mornings
Southern Style Sweet tea for when I don't need to hydrate (black tea is bad for hydration)
Half White/Half Black tea, which has become my standard. I'm pretty sure white and green tea are the same thing. I think.
There are many others, but I like those 3. They've pretty much entirely replaced soda in my daily beverage habits, which while not THAT much better for me, is still a decent improvement.
Oh yea, their green tea with ginseng is okay too, if you prefer a lower calorie drink that hydrates very well.