I just picked up a case of the Muscle Milk cookies and cream - they have 3g of sugar - so I'm assuming it's light because other protein drinks if you're no****ching the labelling - they have at least 10 g of sugar.
Big Lots on Crain Hwy only had the cookies and cream, and they have 3 cases left.
I just looked at the Cyto website - they have a Muscle Milk light with no sugar in it. The ones I bought have 3gs of sugar - I'll be saving them for my JCP nights - to get that little extra energy boost.