In general. Although there are a lot of good proteins I haven't tried like Muscle Milk and AST's VP2. I do think the quality of Beverly products is unequaled in this industry. Their muscle Provider has the highest amount of hydrolyzed whey except for Biotest Surge, which is specifically designed for post-workout use.
I am not convinced that protein powder ingredients warrant the extra cost. Sure, you get what you pay for, but K (same) used to say, "If you buy the cheaper protein, you just have to eat more of it to get the same results." Also, protein powders, barring post-workout of course, are meant to supplement, not replace real food. Nothing at all wrong with 3-4 protein shakes a day, if you feel like spending 5 times as much money for something half as anabolic as real food, like beef, fish and eggs.
People tend to attach too much relevance on the shake nutrition immediately surrounding the workout. You must eat smart throughout the day and attempt to maintain a postive nitrogen balance at all times if you expect to see maximum gains from your workout.