I did like that there were no jitters and no feelings of nausea (some of the other brands, like Simply Garcinia left me feeling a bit woozy on an empty stomach).
The weight loss with Top Secret Nutrition was eh, average, but again, if you have a sensitive stomach, it's a pretty decent trade off. I would say though, still, that this was probably the third most effective brand I've tried with regards to actual number of pounds lost. The most was with a brand called LipoVida -- but I literally wanted to vomit ever day that I took them.
Plus I heard that 80 HCA wasn't actually legal or possible (I'm not an attorney or a doctorscientist, so don't quote me on that - just passing along what I heard) The best so far for actual weight loss for me plus no nausea has been Pure GCE (I ordered mine through the site 'bestgarciniacambogiapills' dot com.