USN 12 week challenge and the sort

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Hi there myfitnesspal friends :)

I was hoping to get some opinions! :)
Every new year my resolution is to get into shape... Since january, I have managed to shed 7kgs. I am now keen to lose the last 5kgs and shape up (I am talking fitness model material!)

I have seen plenty adverts on the USN 12 week challenge, for those of you who arent familiar, this involves a diet, exercise regime and supplements (phedra cuts, pure protein, diet fule and CLA capsules) The stuff is really expensive to buy but if it works i am willing to splash out....
Every fitness mag i have read seems to indicate that taking supplements (by this i am not meaning steroids) is not bad for you and actually quite essential...

Does anyone have any knowledge on this, or maybe any other brand that may be cheaper than USN.. evox etc???

Would LOVE some opinions on this!

thanks friends :)