Looking at meal replacements (powders) and the bars. Back in the day, when I was a rat, Met-Rx was king. Is it still one of the best? Best place on-line to order from? My requirements for meal replacements are less than 350 calories, 250mgs of sodium and not a killer amount of potassium (heart condition, very sensitive to potassium levels) and obviously a good amount of proteins and low fat. Right now I am still just doing about 45-60minutes of cardio so building lean muscle is not a priority but losing fat is... Thanks Yall!