Jay Robb vs Muscle Pharm (MP)
Jay Robb is too expensive for me so I haven't tried it.
First of all I go by the following guidelines as per my nutritionist
1) 5 grams fat or less
2) 5 grams carbs or less
3) Whey Protein (Isolate is better than blend) Either is good though.
4) About 24 grams protein per serving.
I have tried a few different brands and have a preference to the About Time by SDC Nutrition. It is 100% Whey Protein Isolate, Lactose Free (which may or may not be a selling point), I00% All Natural, Zero Sugar, Zero Carbs, Zero Fat, Uses Stevia (a natural sweetener that comes from a plant and is not man made like Splenda and others), and comes in many flavors.
Flavors: Chocolate, Birthday Cake, Cinnamon Swirl, Strawberry, Peaches and Cream, Mocha Mint, Vanilla, Peanut Butter, Banana, Chocolate Peanut Butter, and Unflavored.
GNC.com carries some of these flavors and sells them for about $35 for a container that gives about 28 servings. If you are a Gold Card member then you can get 20% off this price the first week of any month. Gold card membership is only $15 per year which comes out to $1.25 per month. Using it once a month on these protein drinks saves you $7.00 per month and makes the cost per serving less than $1.00.
There are other places online as well to get this product at about the $35 price and perhaps a little lower as well.
Good Luck.