I don't know about the Jillian shakes, but NONE of the Atkins bars are exact matches for the MF bars. They all have more calories - the lowest I've found is 130. You can try them, but you may not lose as much. I've started buying a couple flavors for variety, but I limit it to 1 a day.
I've done lots of searching for less expensive subs, and the closest I could find is Balance Bar Nimble - 120 calories. http://www.drugstore.com/balance-bar...7?catid=184330
They taste ok, but I don't like the texture. I won't repurchase.