Yeah, anything tastes better than Six Star...man, that takes me back to my college days lol.
As far as taste, the best I've had are:
Trutein (chocolate pb cup and chocolate covered strawberry)
the old rocky road and apple cinnamon W2BM (almost ashamed to admit that now, but the flavor on those was still solid)
And the new Thin Mint Yo-Whey from Muscle Research (which smells identical to the cookies and tastes about as close as you can get; though you do get more sugar than most, fyi)
And I'll echo the rest of "it's not at all necessary." However, if you're looking for one and taste is a priority, those all qualify (and I've yet to try it, but I've heard the PES snickerdoodle is great).