Sorry bro, haven t personally used them, but know a few bros using them (know 1 friend personally). THere have been no complaints. They have a nice line-up as well, and a primo product that caused quite some controvery in the way it tested out. It was overdosed significantly, and was tested by a friend of the lab .... so go figure. Do a search and Im sure you will find the thread. I think that JA posted it.