I've never used Anadrol (sorry for the slight hijack) but comparing the two raises a question. Since they're both 17 alpha alkyl based steroids, you'll get the same type of problems to deal with, namely water retention, gyno, and liver toxicity. Of course with Anadrol much more so. But if you have experience with Dianabol it might serve as a basis for forming an opinion. If Dbol causes you little or no problems, I'd be inclined to give Anadrol the four week test.
Needless to say, my opinion is not an informed one, and if I've posted incorrectly, would welcome anyone setting the record straight. I just thought this might be one way to look at the issue.