You'll see results with either one along with proper diet and exercise. And take it according to the directions... I would do whichever one you can find cheaper.

At GNC, people have returned fat loss supplements for the following reasons:
-Bioburn D2T made one lady jittery when she drank it with a cup of coffee. Apparently she was illiterate because there was a direct reference to this on the warning label.
-Hydroxycut Hardcore didn't work for one lady when she didn't change her diet or exercise. Enough said.
-Lipo6X didn't work for one guy, so I asked what his diet/exercise plans were like. He said he ate whatever the kids ate. And that he had 3 kids, so that was all the exercise he needed.
-Hydroxycut Hardcore didn't work for one girl because she was taking 1 pill a day. After a month, she still had most of her 1 month supply. Duh...
-Hydroxycut Hardcore didn't work for one lady because she hadn't lost any weight in one week, so obviously she wasn't going to lose any weight if she did a full cycle.

IMO if you're doing what you need to be doing in order to lose weight, then you are going see results without any supplements. Supplements will help to accelerate the process. And most of the core ingredients are the same. People swear by both Lipo6X and Hydroxycut Hardcore. You'll do fine with either one..so like I said, whichever is cheapest would probably be the best choice. Actually, I get better commission if you buy Lipo6X from me, so choose that one!