I tried the chocolate last time and it was not bad at all. And I'm not even a fan of chocolate flavored proteins. The nutrient profile is great too...probably one of the best among the weightgainer formulas.
check 1fast's site for reviews
If you're looking for the number of servings, just do the math (for the large tub):
6.85 lbs = 3 107.10773 grams
1 serving = 155 grams
3 107.10773 grams / 155 grams = 20.0458563 servings