I think pepsi one is good. But I dont know why pepsi made it!!!!!!!!!!!!! I could see why pepsi made it if they never made diet pepsi! Why would any one want to buy a soda with 1 calorie when they could buy one with none! tHAT is confusing to me, but oh well, it tastes just like regular pepsi. I think pepsi one is not popular no more, when pepsi just came out with pepsi one it was a big hit, now you hardly can find pepsi one in a vending machine. So if the choice of soda are: Pepsi, coke, Pepsi one, I would pick the pepsi one! drink up!