These well-marketed juices didn't live up to expectations.

MonaVie Active

Packaged in a high-end-looking wine bottle, MonaVie tested extremely low in anthocyanins and phenolics. Even apple juice (which also tested poorly) has more phenolics than this Utah-based company's juice. Plus, MonaVie's vitamin C level was five times lower than that of Welch's Grape Juice. That's not many nutrients, especially at $1.20 a serving.

Kagome Purple Roots & Fruits

This juice, from Tokyo-based Kagome, is available for purchase in the United States on Amazon.com. It combines a number of fruits and vegetables, but was a "non-detect" on vitamin C and beta-carotene. Even its high phenolics and okay anthocyanin levels don't justify the price ($0.94 per serving). All of that translates to a letdown, especially when the name – Purple Roots & Fruits – sounds so healthy.