I like Gold Standard 100% Whey by Optimum Nutrition. Dissolves easily and tastes good.
Platinum Hydro Whey is the best I've had by far, the nutrition and taste! The triple chocolate flavor gets rid of that sweet tooth I get sometimes and it mixes very easily. A little expensive though
I'm lactose intolerant so Elite iso100 is what I use. The best tasting brand I have used is IsoFuel brand from muscleandstrength.com. It by far the smoothest I've had and the service is awesome.
I like the Body Fortress Chocolate Peanut Butter. It tastes good and is cheap.
I like whey protien plus by muscletech because I can buy it at walmart in 2 pound container for 18 bucks...but my favorite favorite has always been whey isolate which is zero carb which fits my macro nutrients and desighner whey because of taste
I've been into Sun Warrior Raw Vegan Natural. It's not as scientifically perfectly delicious as the the Dynamix Elite 7 I was using (which was SO delicious, btw) but I love the all natural, no dairy thing.