I remember the old school Met-RX. In fact, there's an ad for it in one of my old magazines I just put back on the shelf: MuscleMag International, issue 125, page 149. Lee Labrada was the guy endorsing it at the time, along with Cory Everson's ex-husband, Jeff, who was using it to help him win the Masters Nationals.
One was called "Met-Rx Plus (red top); the other was called "Met-Rx Base (black top)".