Looking to upgrade my mic set.

The two mics that I've read decent reviews on are the CAD E-350 and CAD Trion 8000 both which I can aquire for $500. An awesome microphone within the 400-600 price range for Acoustic, Vocals, and Ambient Recordings is what I'm looking for. Any advice, experience with these products, or even other mics within that price range?

thanks guys!