Well, I'm not so familiar with the prices in the US, but over at Europe, Mass FX tends to be a bit more expensive then most testo boosters... I think it's pretty common all over the world that cheaper vs expensiver goes first.. Even if the other is better... Sometimes your budget doesn't allow it.. Anyways..
What you feel "on it"... I feel great... period! The mental aspect of Mass-FX is what I truely desire. Getting a "gonna crush that weight"-kind-of-feeling or "alpha male" state of mind or what ever you wanna call it.. That my friend, that builds muscle... How ?
Well, for me, getting the right attitude (aggression) in the gym does really increase how much I put on the barbell.. Even if I'm stimmed up like hell, it doesn't mean that I have the "go" or motivation to increase the weight.. So yeah... That's how I feel it... I can't guarantee that you feel the same, as we are all different... But I've been stucked with Mass-FX since I first tried it.. It's actually how I came on board with AX.. Just ask Tim (T-AD), he can vouch for it!... I tried Mass-FX.. LOVED IT! Got introduces to the rest of the product line through GOOD WILL from AX HQ, who sent me some over to Sweden, as we didn't have it all at that point.. Been stuck ever since..
A little on how I feel it..
It might cost a bit more , but in the end.. It rules them all!