Best streaming software

[stop]

I have a question

What is the best streaming software that;

1. Can stream rfactor without lag
2. That supports commentary without any problems
3. Can stream to YouTube

I'd prefer it to be free, however I would be willing to pay for streaming software, but my worry about that is I might try purchasing some software and find that software is rubbish.

 

[SmashingPants67]

Hope it helps:
http://www.amazon.com/Elgato-Capture-PlayStation-Recorder-10025010/dp/B00840353W
https://ustream.zendesk.com/entries/22734745-Using-the-Elgato-Game-Capture-HD-with-Ustream
On YT:
www.youtube.com/watch?v=MLJjqDDajwI‎