Can anyone point me to existing video's (if they exist) of monks using techniques from various styles from Dragon, Drunken, Harmonious.

For me the actual look of the moves is an important part in enjoying this class. I'm currently lvl 14 and leaning towards dragon style, but would love to see some videos of higher monks in action.

I have not noticed any difference in the styles. My Harmoniuos, Crane and Tiger stances use the same animations. All my abilities, both base and style specific, use the same animation regardless of stance. Fighting side by side with some Dragon style monks I can say, there is a slight difference in the Mastery animations so far. Personally, I wouldn't choose your style base on animations, but your play style. But, just be happy with what you do choose, that is most important to keep you playing.
 
If you are on Woefeather, shoot me a tell this weekend some time and I will come demonstrate 'Harmonious Style'