I have used tbol in two different stacks, EQ and Primo. Have never done it alone. My problem was I don't think I dosed enough, and never had any noticeable results I could point to from the tbol at 30 mg (1st) and 40 mg ED (2nd) such as massive strength increase (or forearms), vacularity or mass. No sides to speak of though for me.
I have heard enough good things about tbol that I am not giving up. I have no complaints about winny really, but next cycle I am going to use at least 50 mg ED for 4 weeks as a kickstart.