MrBrightside, we can go back and forth all day long over this 'til everyone is blue in the face,but seriously, what's the point? I would recommend doing what I did, and trying them both, or in your case, giving DTH a try. Last time I checked, Chuck guarantees his products. I've had the pleasure of using both, and DTH did more for me, faster for me, than AX. AX was fine by me, but it took a day over 2 weeks for anything to really get going, where as with DTH, the first full day of doing made it apparent it was already going to town. As for the Tribulus doing nothing, I for one believe in the synergy of things. By itself, it might not seem impressive, but having something in the mix to keep your libido up (which can crash when raising/freeing test) and increase aggression ( good motivation is key) is where it shines. Some companies get by on using it as their main ingredient (see Prime) with purported good/excellent results, so obviously, it's not all hype, and granted, some will respond better than others, that's just natural. For me personally, I've always responded very well to it, but I build up a tolerance to it very quickly, as with most things. Dth isn't just a simple "Test Booster", it's a good job at covering all the bases within reason. My libido crashed after the third week of AX, but everything else was fine. Personally, I feel DTH is a great buy at the price, as it didn't take 2 weeks to kick in. Granted, I could have taken 6 AX per day, but I prefer to take the minimal amount to get results, as, like I said, I build a tolerance quickly. 2 DTH per day was very noticeable for me, so I view it as being far more cost effective. For me, that equates to 15 days of AX, or over 60 days of DTH ( since I take the 5th or 6 day off). Seriously though, give it a whirl, I did and I'm glad. I will say this though, I love Lean Extreme!!