I've used Tribex, Vitrix, and Optimum Nutrition's Tribulus 625, they all seemed pretty comparable, nothing really stuck out to me about either of them being better. On my last pct I ran the ON 625 caps and took 10 pills/day for 6250mg of tribulus a day, the stuff is so cheap it is affordable to dose it really high, never really had any libido problems coming off cycle, so I am assuming it worked just fine. The other trib products I want to try are Tribosten by Thermolife and FUZE by Primaforce, which is pretty much the same product as Syntrax's FUZU which I have heard was very good. What I am wanting to run for my upcoming post cycle here in a couple weeks is the ON tribulus (I would like to try a different brand, but have some left over), Rhodiola Rosea, Fenugreek, Long Jack, and low dose DHEA, I think that would give a pretty good libido boost, may be a bit overkill. I am running pretty low on money right now, so I doubt I get the Rhodiola and Longjack. BTW, I was going to dose the Rhodiola at ~1-1.5g/day and the Long Jack at ~3g/day.
Anybody have any experience with the Rhodiola or Long Jack?