It's not just the brand of gear, but which lot it is from as well. I'm using ttokkyo testonon right now, and having no problems what so ever. If you are expierencing pain like you said you are, you got an old batch with very high BA content. Some people are holding on to the older lot #s till they can find somebody to pawn them off on. Next time do a little more in depth research and ask your source if he has certain lot #s. I know it may sound like a lot of bullshit to go through, but the two main guys I use have no problem with it since they know I'm a good customer. Just my .02