the trouble with me and jamba juice is that the calories are huge for the size of the drink and the fiber content is half what i'd want it to be for most of them... i know they taste great and i would drink them if i wasn't fat, but in the meantime they are just too much for me!

the power one you link to one has 6 grams of protein and 6 grams of fiber, same as a lightfull, but the calories are 610 rather than 90! i'm sure it tastes good, the 610 cal version, but that would be almost half my cals for the whole day, not just a little snack to tide me over until dinner.