Just switched from Syntha 6 in order to cut carbs and sugars, which is renowned as a great tasting protein.
I have tried 'budget' proteins before from competitors and not been impressed, but Diet Whey has really impressed me.
Firstly price, although usually £60 - i paid £50 on a deal, for 166 servings this is amazing value. It mixes really well, not grainy at all, and doesn't taste chalky or dry. Taste wise I went for the chocolate cookie, and its ok, it''s not extremely chocolatey, but its nice - very palatable so you don't need to get it down in one go.
I'll have to wait and see how results go but an extremely good product at an excellent price.