Wow, this is like the gazillionth thread on protein shakes!
First, when using powder, make sure you get the whey protein isolate, which is pure and mixes up with a spoon-- whereas whey protein concentrate has to be mixed in a blender and uses lactose as a filler. (and I'm intolerant!

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Everyone has different tastes--whether you want fruit flavored, chocolate, vanilla, cinnamon, caramel--the flavors are endless! But I get my IDS Multi Pro whey (in belgian chocolate--mixed with water tastes like a chocolate shake!) from
Amazon.com: Online Shopping for Electronics, Apparel, Computers, Books, DVDs & more They have all different flavors, sizes, costs, and some even come with free shipping.
I always tell everyone here--I find the canned drinks to be garbage and only good for convenience sake--but again, everyone's tastes are different. Do what's best for you--just make sure it's low carb, bud!!