Protein supps

What is a good protein supplement is there one with no flavor?

I buy the GNC brand which is unflavored and I usually mix it into soup. I really like it, theres no taste but it does thicken up the soup a bit. I have heard that GNC also has some 'bullets' and so does walmart which are like little shots you can drink so you dont have to deal with the volume of a bowl of soup or whatever. GNC is a healthfood store out here (California)but I dont know if its everwhere.

Vitamin Shoppe carries Jay Robb's brand - chocolate, vanilla, strawberry and dreamsicle - all taste great but he's kind of expensive - i ended up buying Elite Protein- mixes well, tastes great and just got chocolate and vanilla - there are so many different things you can do with those flavors!!