Hey Castor,
I actually just stopped using NOX-CG3 after about 6 weeks. In that time, I felt more energy during my workouts and my body began to look quite a bit more vascular. I would definitely say that it's a solid product. However, I would definitely buy it on eBay rather than the Xyience site. I easily found a good deal of 780g Blue Raspberry for about 55 + shipping.
But anyhow, great product. I am almost sure that I'll continue using it after an off cycle.
-ManofPrinciples