I have stopped using Evernote due to it's incompatibility with the "common" Mac wokflows - no support for webarchives, bad support for RTF/RTFD. Personally, I stick with DevonThink (or before that I used Together). The sync features are great, but since the rest of the application does not "do it" for me, I'll rather pass.
Rich text is so integrated into Mac OS X that Evernote stands out from all other competitors on the platform for the lack of such support. I know there are technical differences, but copy/paste into Devonthink, Together or Shovebox is a much nicer experience.