I like the sounds on these clips.
Blue:
http://www.flickr.com/photos/shinypenny7...hotostream
...and red.
http://www.flickr.com/photos/shinypenny7...hotostream
Blue:

http://www.flickr.com/photos/shinypenny7...hotostream
...and red.

http://www.flickr.com/photos/shinypenny7...hotostream