If you talk about the subject matter of saw palmetto as well as prostate medicine, and determining that is better and going to give additional relief, there are cons and pros to both.  
  
Here's what I mean:  
Typically talking (and this is never the truth every time, I'm totally generalizing here) prostate medicine -- assuming we are speaking about prescription medicine -- works faster, and bring quicker help compared to an all natural remedy like saw palmetto. Especially since, in ways that are many, it is not even always the best natural cure you are able to get.  
So the time factor comes into play.  
This's important, obviously, if you're experiencing a great deal of pain due to prostatitis or BPH.  
On the other hand, what all-natural options have, a large number of prescription medicines don't, is no side effects. There might be some people who cannot handle natural supplements, etc, herbs. But mainly, they have an inclination to be clear of side effects (although they might interact badly with some other prescription drugs -- so always check with a physician before taking any medication -- pharmaceutical or natural).  
What else do you have to consider when discussing treatments which are natural like saw palmetto and prostate supplement (This Internet page) medicine (the pharmaceutical kind)?  
What about cost?