The Great Stevia Wars

So, my friend Cynthia came down at break and we were chatting. I mentioned that I felt like having my diet Dr. Pepper. I pulled out the can and then she starts bugging me about Aspartame. I told her that I haven't really ever heard of any real studies linking aspartame to health problems.
So, I got to looking for research and found this interesting website:
http://www.holisticmed.com/aspartame/
which contains a lot of reports on the health detriments of Aspartame. Unfortunately for them, I couldnt' find any genuine studies they had done linking Aspartame to anything truly bad. Also, they have the word "holistic" in their name, which is a synonym for "bat-shit crazy".
Here is the Monsanto site about their profitable little chemical:
http://www.aspartame.org/

And here is a CBC article about a natural sweetener which is running into all kinds of regulatory problems in Canada and the US despite the fact that it is used by Coke to make Diet Coke in Japan. This is actually pretty interesting. There might be some serious money to be made on that front.
http://www.cbc.ca/consumers/market/files/food/stevia/