Have been using tren hex 600mgs a week and sustanon 750mg a week and feel like the sides of the tren are starting to catch up with me and want to switch to some masteron to finish off my cycle with as few sides as possible. I was thinking 600mg at first, but I have a bunch of it and want to get full results from it since it is replacing tren in my cycle. Any one notice much of a difference from 600 and 900mgs?