We used Radar for a Louis La Roche video. We got two great videos and went over 30,000 views in 2 weeks.
Radar provides a really excellent service. We, like much of the music industry, are beginning to see youtube as a serious revenue stream - not just a promotional platform. I believe it is a great time to invest in high quality content. It is amazing to be able to connect with a such range of visual creators pitching within your budget and timeframe.