Xtend has always been known for its good flavors and i feel they played it off well in their protein too. Not the best tasting protein I've had but no complaints here. 25g from a 35g scoop for an isolate seems a little off to me, though its probably just to get you the good flavor. Nutrition panel looks decent with only 120 calories per scoop.
I would definitely recommend this but if you're looking for an overall better protein isolate, I'd suggest dymatize.
Mixability is water is perfect, no clumps at all. I think it would taste better with milk (i usually do only water). The cookie butter flavor has a little peanut butter after taste which i really dont mind. Definitely goes well with smoothies. Throw in a banana and some oats and you get a delicious meal replacement shake.