I've been seeing lots of posts about members tired of this or that flavor of whey protein, so I thought I'd pass the word.
There are flavoring systems designed to be mixed with bulk whey powders and bulk waxy maize starch, both of which are unflavored and have been described as tasting akin to cardboard.
Black Star labs has various flavors that you can buy in large quantities to mix with your favorite whey protein, waxy maize starch, or combination of both. Best of all, they are sugar free and come in a variety of flavors for you to enjoy.
There are other brands of flavoring systems, so don't be shy about looking around to find one that meets your budgetary and culinary needs. Cheers!