I get the big 5lb tub of ON double-rich chocolate. It's not so nasty tasting that I can keep it down, and it's pretty good as far as protein vs. sodium and cholesterol. I tried the ISO vanilla and chocolate, both made me want to hurl pretty much instantly. Right now my buddy had a leftover tub of rocky road ON protein that he dumped the remainder of his ISO chocolate into. It doesn't taste too bad.