Proviron works much better when stacked with test. I don't have much of a difference by itself. Some report much better results than I. Could be a receptor thing.
50mg didn't do anything for me. 75mg was a little bit better, but when I upped it to 100mgs I was raring to go. I also think your age has alot to do with how much you need to get the desired effect. If you're a young guy 50mg would probably be good.