The Canon Vixia HF M300, Panasonic HDC-SD60K, and Canon Vixia HF R10 were rated by CNET to be some of the Best HD Cameras as of October 2010. While these low-end cameras hover around the $400 – $500 mark, I would recommend reconsidering your requirement of high definition. You will most likely get better results with a standard definition camera with better lenses and more features at the same price range.