Supplements ?? Gnc/pro source.

I'm going to be ordering several items this week to help jump start my life over.. I'm either going to order from gnc or prosource. I'm thinking about buying some lean from GNC..but wanted to know if anyone else buys supplements from either and how it's working out! Thx!!

Btw: I'm aiming to lose around 50lbs or so. Get more energy..and overall live a healthier lifestyle.