Hey mate. A couple of documented articles.
http://www.ncbi.nlm.nih.gov/pubmed/24898559
http://onlinelibrary.wiley.com/doi/10.1111/j.1440-0960.2012.00909.x/abstract
Important to bear in the mind the guys who didn't respond on Finasteride, were only on it for 6 months. The drug takes a while to work for some people. So those who benefited on dutasteride may have also benefited if they stuck with finasteride. Also what is "no significant improvement"? The abstract doesn't say whether it refers to regrowth or maintenance. The latter would be a success in reality. I am sure the full article would have this clarification.
The other link is of only one patient so doesn't constitute a study. Still, it's something.
Either way, I am sure Dutasteride provides better maintenance for those with aggressive male pattern baldness. But I am starting to think it might be able to recover miniaturised better or at the very least, much quicker. I have had thickening and regrowth on finasteride at the back big time which was thinning a little, middle was always fine. But I would like better frontal gains, the process is also quite slow in this region.
It's an experiment I may try. finasteride is bullet proof for hair loss but dutasteride is something else. The lure of the soft gelatin based capsule continues.