I've used both. US pharma gear, although limited is by far the best. If you do suffer from gym I, the pharma stuff will REALLY set it off. While on I need 1.5 mg's of Arimidex a day. The IF lab I used was pretty good too. Its been a while, but back in the day "RC" had some great if gear. It still dont touch the stuff I've been getting from the doc