From what I can gather, the Harmony does everything for you as long as it is pre-defined on the Harmony site. The upside is that it is "easier" to customize, because you do not do the customization. The downside would be you need the Harmony site to make any changes. How difficult is it to customize if the Harmony site does not have what you want to do pre-defined?

The MX-700 editor is NOT hard. I just watched the 2 minute video that is available on the HomeTheaterMaster website. The only time I have referred to the manual was to make sure I was setting up a delayed macro properly.

Hey Jack...send me your Harmony and I will do a comparison. hehehe

Remote Central has some great reviews of the remotes:
http://www.remotecentral.com/remotes.htm