Second report on "Wake the Hell Up!" brand's "Jamaica Me Crazy"-flavored Ultra-Caffeinated coffee, specifically on the caffeine rush. After two days' worth of testing, I can report that there does not appear to be a rush. There is a sustained high level of caffeine, but that's about it. It's nothing like the original WtHU coffee's rush was.
I can recommend the coffee on taste, but if you're looking for a big jolt, I'd stick with the original "Wake the Hell Up!" coffee instead.