I used to juice tons of fruits & veggies then when my budget was tight I tried buying green powder (it is actually cheaper than buying bushells of veggies but less 'fresh')..also.didn't take to it. No pouch problems (except for the colour of the output...a little scary the first time)...
I didn't notice a sudden energy burst but then again, I never usually do (except with skinny girl)...
I also bought green goodness...a green juice full of green goodness (or so it says)...I like it, its tasty but I don't fell like it is any better or worse than anything else.
1 small side effect ...you have looser output...so beware.
Sharon