The WSJ reviewed the m500 & m505 along with the visor edge today. The result? They liked the m500 and the edge and hated the m505. They said the m505's screen was dim and didn't even come close to the color screens on the iPaq and Prism. The bottom line at the end of the article was the m500 & Edge were "welcome additions" but to "stay away" from the m505

Here's the link