Coke Zero or diet Pepsi MAX?

I’m out of my Diet Dr. Pepper phase. I now must decide between Coke Zero and diet Pepsi MAX. You may think my capitalization is out-of-whack.  It is, but that is how it looks on the can. Who am I to contradict focus groups?

So far the nod has to go to Zero. DPM has so much caffeine, I act loopy. Reminds me of Jolt. Remember Jolt? It used to advertise “all the sugar and twice the caffeine”.  The same slogan could have applied to the Matt & Rob Morning Show on WBGU-FM, also a product of the later half of the 1980’s.