All the bulk sellers are much of a muchness (basically the same thing) so it just tends to come down to who has the best deals, who has the flavours you like, who tends to deliver the best customer service. Personally bulkpowders tend to nip the others for the items I buy but bodybuildingwarehouse are also one I rate highly. The Protein Works are often getting good feedback too.

Vanilla or chocolate were probably your only options and they will have both tasted like crap..... today's gym goers don't even know they are born with the choices they have today.