Ah, now we need to define "would be easy to use". This all comes down to the individual.
If they are an avid user of MS products such as Word, Excel, etc., then an FP Web might be the best solution for them. But, their requirements will dictate the type of environment you build for them.
I believe you'll find help for most packages out there. There are communities for each of the major products and users of those products are quick to help others.
In my personal opinion, most CMS packages are overly complicated for the "average" user. And I guess the person using the system can also complicate things even more.
Let's remember that all of this comes back to the individual and their requirements. In some instances, it is easier and more cost effective to build based on the requirements. This way you don't end up with all this additional functionality that is never going to be used. That complicates things. A FrontPage, EWD, Dreamweaver Web, can probably accomplish most of the "average" users requirements without overly complicating the process.