Yes, I've tried the jins. I can't explain this, but it seems to me I experienced slightly more fat loss with jins than with browns. It may be that I was carrying a bit more fat at the time.
I personallly measure the strength of gh by how much lethargy it induces: Jins, browns, and hygetropins all knock me on my ass unless I'm supplementing with T4.
Aside from this lethargy, I don't experience any sides from gh because I've been on it for too long and my body has become acclimated.
Bottom line, I consider them comparable and because hyge is sooo much cheaper, it's my brand of choice right now.