developers generally love Sitefinity, because they get it even from looking at the idea and features list. With business users, we find it best to show them videos or set up a small prototype (perhaps using one of the templates that comes with Sitefinity) and have them try it.
In our experience, business users fell very fast in love with Sitefinity once they realize the power it gives them when it comes to the control of their online presence. Also, you may want to schedule a presentation with one of our representatives which will focus more on the end user features.
I hope this helps. Let us know if there is anything else we can do for you.
the Telerik team