Groupon Goods deal for ON Soy Protein Powder

I just saw this deal on Groupon..

www.groupon.com/deals/gg-optimum-nutrition-soy-protein

The Deal

• $16 for a 2-pound jar of Optimum Nutrition 100% soy protein powder in dutch chocolate flavor ($31.99 list price)

An additional $4 shipping fee will be charged at checkout.

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Optimum Nutrition 100% Soy Protein Powder

Scoop soy protein powder into shakes to help boost muscle recovery after intense workouts or wrestling bouts with mountain lions. The chocolate-flavored workout supplement boasts 25 grams of protein per serving, and shakes made according to Optimum Nutrition’s recipes contain as few as 120 calories each. Owing to its heavy soy composition, the powder also contains all essential amino acids.

Features

• Provides all essential amino acids
• Helps muscles recover from exercise breakdown
• 25 grams of protein per serving
• 120 calories per shake
• No cholesterol
• Dutch chocolate flavor
• 2-pound container
• 30 servings total

Have you tried this? is it good? I'm super picky some of the powders are so gritty.....

I've not tried the soy, but I use a couple of different flavors of Optimum Nutrition - a vanilla and carmel toffee fudge and they blend up pretty smoothly, even just using a blender bottle. The consistency of the powder is really fine in the jug- my other vanilla (which mixes equally well) is way more coarse/gritty appearing unmixed.