Been away for awhile. I'm seeing all these new choices for GH now. I've only ever done Jintropin. My powder source is selling Kefei blue tops, generic blue tops, Topping company brown tops and something called Peculiarity Purity 98-99%. These are all somewhat cheaper than I was getting Jin for. Actually they're half the price. I've also been hearing alot about Hygetrophin. What's the deal? Can someone in the know take a couple minutes to bring me up to date. Just experienced opinions please. I'm not interested in hearing what some guy at your gym said. Thanks a bunch.