Diet Dr Pepper. I'm out of my Country Peach Passion CS

. I haven't gotten around to trying anymore of the Adagio teas yet. With a rate of three failures and only one success, I'm being a lot more cautious with those.
I need something that tastes as good as the Country Peach Passion CS, but yet has caffeine... I have yet to find a black tea flavored strongly enough to even come close.