I just finished 15 days on the Purify cleanse. At first I had it delivered, which was extremely convenient - except that it is typically delivered late at night (so you have to wait up for it). I then started to pick it up at the location, which was MUCH cheaper to do!
The drinks are fabulous. The creamy cashew milk is definitely my fav. I recommend doing a salt water flush a few times while on the cleanse, so that it's more effective (or go for colonics).
Each day is approx. 1200 cals, so you ARE getting sufficient cals for the day while cleaning out your system and giving your body a break! I didn't workout on this cleanse, because I truly wanted my body to focus on healing itself (rather than repairing muscle tissue). I have to say I had just as much or more energy while on this cleanse! Ultimately, I would recommend this cleanse to anyone starting out juicing, for the convenience, quality, and customer service :)